Location-specified regional artificial satellite search

FIELD: radio engineering, communication.

SUBSTANCE: wireless device receives a first signal and obtains an identifier indicating a first location from the first signal. The first signal can be received from a cellular base station and the first identifier can be a mobile country code. The wireless device uses the identifier to determine accessibility of signals from a regional satellite system in the first location. If signals from the regional satellite system are accessible in the first location, the wireless device retrieves information associated with one or more artificial satellites in the regional satellite system. The information may include pseudorandom numerical codes and the search range in Doppler mode which corresponds to the first location. The wireless device receives a second signal and processes the second signal to obtain first satellite signal information. The wireless device determines its location at least partly based on first satellite signal information.

EFFECT: improved satellite search efficiency, shorter search time without using additional information such as ephemeral information, almanac or satellite time information.

22 cl, 6 dwg

 

The level of technology

This invention relates in General to positioning, and more particularly to a positioning signal from regional satellite systems.

Global navigation satellite systems (GNSS) provide positioning data to users around the world. Using information from different GNSS satellites it is possible to determine the location in the global zone coverage and synchronized with the time of the satellite.

Recently established regional satellite systems in addition to existing GNSS systems. Regional satellite system serving a particular part of the world and, among other things, help to improve the accuracy, integrity, and availability of global satellite positioning in their respective service areas.

Mobile devices are becoming more available and can receive and process signals from both global and regional satellite systems. By their nature, these devices are changing the location and can, therefore, move in and out of coverage areas of different regional satellite systems.

In the mobile device may search for regional artificial satellite that is unavailable from its current location. This useless search spends time, energy and search functionality, and thus, impairs the efficiency of positioning. Alternatively, the mobile device may be programmed to wait up until your location will not be received, prior to determination of the availability of regional satellites. It also increases the time required to get a fully accurate position, and results in lower efficiency.

Disclosure of inventions

Disclosed the location system, method and device. The wireless device receives the first signal and receives the identifier that indicates the first location from the first signal. The first signal may be received from a cellular base station, and the first identifier may be a mobile country code. The wireless device uses the identifier to determine the availability of signals from regional satellite system in the first location. If the signals from regional satellite systems available in the first location, the wireless device retrieves the information associated with the one or more artificial satellites in regional satellite system. Information can be stored in the wireless device and may include a pseudo-random number codes or other identifiers of the satellites, as well as the search range vdiplomas.com mode, corresponding to the first location. The wireless device processes the satellite signals from one or more satellites and determines its location based at least partially on the information obtained from the satellite signals. The wireless device may process the signals from regional satellite systems, at the same time, processing signals from one or more satellite global positioning systems.

In one embodiment, is disclosed a method of determining location. The method includes receiving the first signal and receiving the identifier from the first signal indicating the first location. The method also includes retrieving information associated with at least one artificial satellite using the identifier, and at least one artificial satellite is owned regional satellite system. The method includes receiving the second signal and processing the second signal to obtain a first satellite signal to at least one artificial satellite. The method includes determining the location of the wireless device at least partially based on the information of the first satellite signal. The method may include determining orbital the IPA at least one artificial satellite and removing the search range in the Doppler mode, the corresponding Doppler frequency shift in the first location, if the orbital type is defined as geosynchronous. The search range in the Doppler mode restricts the search to the first satellite signal. In some embodiments, the implementation of the method includes processing the second signal to obtain information of the second satellite signal from at least one artificial satellite, which is part of a global navigation satellite system (GNSS), at the same time receiving information of the first satellite signal.

In one embodiment, a wireless device is disclosed. The wireless device includes a first receiver, configured to accept the information-carrying signal having a first identifier that indicates the first location. The wireless device also includes a second receiver that is configured to accept many of the satellite signals and determine the location of the wireless device using information from a variety of satellite signals, the second receiver receives at least one of the many satellite signals using the second identifier for satellites that are part of a regional satellite system. The wireless device also has rocessor, made with the possibility to receive a first identifier from the carrier information signal and to extract the second identifiers from the memory of the wireless device based on the first identifier. The processor may also be configured to determine the orbital type artificial satellites that are part of a regional satellite system, and retrieve the search range in the Doppler mode, from the memory, if the orbit is geosynchronous, but not geostationary. A second receiver limits the search to a carrier frequency of at least one of the many satellite signals based on the search range in the Doppler mode. In some embodiments, the implementation of the second receiver receives signals from global navigation satellite systems using third identifiers and simultaneously receives at least one of the many satellite signals using the second identifier.

In one embodiment, is disclosed a method of determining the location for the mobile device. The method includes storing information associated with the artificial satellites regional satellite systems, in the memory of the mobile device and receiving a ground signal from the cellular base station. Ground signal contains an ID that points the speaker first location. The method also includes determining availability of the first regional satellite system in the first location-based identifier and retrieving from memory a pseudo-random number code corresponding to the first artificial satellite, the first regional satellite systems, if the first regional satellite system available in the first location. The method includes receiving the second signal and processing the second signal using a pseudo-random number code to get the data from the first satellite signal. The method also includes determining the location of a mobile device at least partially based on the information of the first satellite signal.

In one embodiment, disclosed computer-readable media encoded with one or more instructions for locating wireless devices. One or more instructions include instructions which, when executed by one or more processors, instruct one or more processors to perform the steps of receiving the first signal, receiving the identifier from the first signal indicating the first location, and retrieval of information at least one artificial satellite using the ID. At least one artificial joint venture is tnik is part of a regional satellite system. The steps that are performed by one or more processors also include receiving a second signal, processing the second signal to obtain a first satellite signal to at least one artificial satellite, and the location of the wireless device at least partially based on the information of the first satellite signal.

Brief description of drawings

Figa is a high - level block diagram of a variant of implementation of communication systems including global navigation satellite system and regional satellite system.

Figv shows an additional variant of the implementation of communication systems including global navigation satellite system and two regional satellite system with respect to a specific geographical area.

Figure 2 is a functional block diagram of a mobile device that can be used with communication systems figa-1B.

Figa-3B show exemplary data structures for storing information about regional satellite systems.

Figure 4 is a block diagram of a sequence of operations illustrating one variant of the method of positioning for use with the wireless device.

Signs, the nature and advantages of the invention shall become more apparent the C below detailed description, taken together with the drawings in which similar elements have similar reference numbers.

The implementation of the invention

Figure 1 is a high - level block diagram of a system 100A in accordance with one embodiment of the present invention. As shown, the mobile device 140 may receive signals from a global navigation satellite system (GNSS) 110, a regional satellite system (RNSS) 120 and transmitter 130. The mobile device 140 uses the information received from the transmitter 130 to determine the availability of the satellite signals from specific RNSS satellites (hereinafter referred to in this document also referred to as "SV" and "satellites") and to limit the Doppler search for such satellite signals. Mainly using information from the transmitter 130, the mobile device 140 searches for specific regional SV, from which signals are most likely to be available in its current location before it receives location coordinates. Additionally, the mobile device 140 may limit the search for signals from regional SV characteristic for the location of the search range in the Doppler mode.

Global navigation satellite system 110 includes one or more satellite navigation systems that provide data items the treatment of users around the world. For example, GNSS 110 may include a global positioning system (GPS) for navigation and locating satellites managed by the United States. In General, each artificial satellite GPS modulates a carrier, such as frequency L1 (1575.42 MHz), using a pseudo-random number code (PRN) and the navigation message. PRN identifies a particular SV, which transmits the signal, and is used by the receiver to determine the time between signal transmission in the artificial satellite and the time of reception at the receiver, from which the distance between the satellite and the receiver can be determined and used to determine location. The navigation message contains information about the orbit (ephemeris data about the orbit of the transmitting SV, as well as information almanac with approximate positions of other SV in the group of GPS satellites) together with other information, such as temporal information (e.g., time of week or TOW). Although the GPS system is used here for purposes of discussion, it is clear that GNSS 110 may include other global satellite navigation systems such as GLONASS system, controlled by Russia, the Galileo system, developed within the European Union, and global navigation satellite projects, such as the COMPASS system, planned for future deployment in China. According to CNAE satellite systems may use different schemes for the transmission of information, which should be used to determine location. For example, each of the satellites of the GLONASS system uses the same PRN code transmitted on different frequency channels. However, the techniques described herein are not limited to specific types of messages or transmission schemes.

Regional satellite system 120 includes artificial satellites that complement the functionality of GNSS 110. Artificial RNSS satellites typically have either geostationary or geosynchronous orbit, and as a result, they are visible only in certain parts of the world. In other words, RNSS 120 serves a specific geographic region ("coverage"), certain orbits its specific satellites. For example, RNSS 120 may include a global system refinements and corrections (WAAS), covering the United States, the European geostationary navigation coverage (EGNOS), covering Europe and the surrounding regions, MTSAT satellite system specification (MSAS), serving Japan, and satellite system Quasi-Zenith (QZSS). It will be clear that RNSS 120 may also include other regional satellite systems, such as automatic refinement GPS (GAGAN) and Indian regional navigational satellite system (IRNSS), developed by India and other similar systems.

IP is ustinya RNSS satellites in 120 transmits messages to the position data. Typically RNSS messages are transmitted on the same carrier frequency as the SV in GNSS 110, but is coded to identify a particular RNSS satellite, and uses a different message format. Regional satellite systems such as WAAS and EGNOS use ground stations to monitor the artificial satellites GNSS in their respective service areas. Ground station unload the correction data at the regional SV, which are then broadcast correction data encoded in satellite communications. One aspect of RNSS 120 is to improve the accuracy, integrity and reliability of global positioning systems such as GPS and GLONASS.

The mobile device 140 is a wireless device that can receive satellite positioning and other communication signals. For example, the mobile device 140 may be a cell phone with the ability to determine location. As shown, the mobile device 140 receives voice and data signals from a transmitter 130, such as a cellular base station. However, the mobile device 140 is not limited to a cell phone, and may also include personal digital assistant, laptop, smart phones and similar communication devices. In some embodiments, the implementation of mobile device 140 receives FM radio signals, the signal C is prologo television and communications wired/wireless network, such as Ethernet, Wi-Fi, WiMAX Protocol (broadband radio), etc.

The transmitter 130 provides a signal with information indicating its inaccurate location or service area. In an exemplary embodiment, the transmitter 130 is a cellular base station, and its service area is identified by the country code or similar data. However, the transmitter 130 may include other terrestrial and/or satellite resources, such as FM radio stations broadcast digital television and wireless or wired data network. In one embodiment, the transmitter 130 is a wireless access point that provides NITZ (identity network and time zone information to your customers. Global (absolute) time zones, for example, correspond to specific geographic regions and can, therefore, serve as identifiers of the location. In another embodiment, the transmitter 130 is a server that can provide the mobile device 140 network address or similar identifier. For example, the ISP may assign the client computer IP (Internet Protocol) address, which corresponds to the approximate geographical location.

The mobile device 140 uses information about the position the position of the transmitter 130, to determine the availability of RNSS satellites 120. If the location information indicates a country in Europe, for example, then the mobile device 140 may determine that it is likely in the EGNOS coverage area and can look artificial satellites EGNOS. Similarly, if the location information indicates the United States, then the mobile station 140 may determine that it probably is in the coverage area of the WAAS, and may limit your search accordingly. Because RNSS satellites 120 support geostationary or geosynchronous orbit and provide correction data for use in their specific coverage areas, the mobile device 140 avoids searching SV, which are invisible and/or do not have data that can be used to determine its location.

To illustrate, assume that the mobile device 140 is somewhere in Europe and that it has no location coordinates. Also assume that the mobile device 140 lack of data that could be obtained from a previous location coordinates, or that the previous positioning data become obsolete. In these conditions, the cold startup of the mobile device 140 lacks information about the availability of the suit is the only RNSS satellites 120. However, if the mobile device 140 received signals from the base station (even before the current switching status of the power supply), it can get a mobile country code (MCC) or similar geographic identifier. For example, when activated, the mobile device 140 may automatically receive the signals from the serving base station indicating that it is somewhere in Germany. Using this information, the mobile device 140 determines that it is in the EGNOS coverage area and identifies specific EGNOS (regional) artificial satellites, from which it can receive data positioning. This can be done in parallel with the search of the global artificial satellites in the GNSS 110, thereby accelerating the process of obtaining accurate location coordinates. Alternatively, the mobile device can use information about the technical condition obtained from a variety of SV in RNSS 120 to further Refine your search GNSS satellites.

FIGU is a diagram illustrating aspects of the system 100B communication in a specific geographical area. As shown, artificial satellites GNSS RNSS 110 and 120 have a coverage area that includes Japan. The mobile device 140 is a personal digital assistant (PDA), which receives signals from the transmitter 130, and from the global to yacynych satellites 110-G and regional satellites 120-MT, 120-QZ.

In the described in the present embodiment, RNSS 120 includes two regional systems. The first regional system is MTSTAT satellite support system (MSAS), presents an artificial satellite 120-MT. MSAS satellite 120-MT supports geostationary orbit over Japan and provides additional data, as described above. Artificial satellites 120-QZ1, 120-QZ2 are part of a satellite system Quasi-Zenith (QZSS). QZSS satellites 120-QZ support geosynchronous orbit having a coverage area (the track of the orbit), extending approximately from Japan to Australia. QZSS orbit-satellites 120-QZ known, and, thus, their height and Doppler characteristics can be defined for each country in the coverage area.

The mobile device 140 receives the identifier from the transmitter 130 that indicates a geographic area. As previously noted, different identifiers may be used and may have varying degrees of accuracy. ID world time zone, for example, may indicate only that the location (Japan) is within a specific part of the Earth in longitude 15 degrees. On the other hand, the country code or similar identifier may indicate that the location is in Japan or perhaps one of the Japanese Islands.

Through the Yu identifier of the mobile device 140 retrieves information about the availability of RNSS satellites 120. In the case of Japan, the mobile device 140 determines that artificial satellites MSAS, QZSS available in addition to the global navigation satellites GNSS 110. Similarly, mobile device 140 may exclude many SV in WAAS and EGNOS systems as possible candidates of the search.

After determining the availability of one or more regional satellite systems, mobile device 140 prioritizes search SV. For example, it is expected that the QZSS satellites 120-QZ must pass interoperable with GPS signals to determine the location and correction data for the GNSS satellites 110-G coverage QZSS. Similarly, the orbits of artificial satellites QZSS will be such that at least one is from a high angle over Tokyo almost all the time. The mobile device 140 may store this and other information about RNSS 120 and its specific SV and can use it to prioritize search positioning signals.

Beyond the availability of regional satellite systems in the mobile device 140 may access information, which may limit the search for signals from specific regional artificial satellite. This may include limiting the search in the Doppler mode QZSS satellites based on the location ID, adopted the th from the transmitter 130. For example, the Doppler frequency offset of QZSS signals from artificial satellites 120-QZ depends on the location. As a rule, it is approximately ±250 m/s in Japan, but can reach ±500 m/s in Australia. In the worst case Doppler shift QZSS is approximately ±650 m/S. Thus, if the identifier specifies Japan as the approximate location, the search range of artificial QZSS satellites 120-QZ may be limited by the frequency corresponding to the Doppler shifts of about ±250 m/s to greatly improve the search time.

It will be understood that the present invention is not limited to a specific geographic region or specific regional satellite system. Instead, embodiments of the present invention have extensively covered the definition of availability RNSS systems based on the identity of the location and identification of artificial satellites available in RNSS systems. Also it will be clear that the identity of satellites, such as pseudo-random number (PRN) codes and numbers of frequency channels can be used to identify a particular SV in regional satellite system. The number of frequency channels, for example, can be used in satellite systems such as GLONASS, which transmit signals using multiple access with frequency is OTDELENIE channels (FDMA) or similar technologies. Access to information about available RNSS systems and their satellites is carried out in order to improve search efficiency and to improve the locating position. Accordingly, in particular, it is expected that embodiments of the present invention can be used with existing and future regional satellite systems without restrictions.

Figure 2 is a functional block diagram of a variant of implementation of the mobile device 140. As shown, the mobile device 140 includes an RF transceiver 220 and satellite receiver 260, both connected to the antenna 210. RF transceiver 220 is also connected to the processor 230 of the main band. On the receiving path RF transceiver 220 receives an incoming RF signal and delivers it to the controller 230 connection. The processor 230 of the main bands restores information from the RF signal. For example, the processor 230 of the main frequency bands may demodulate and decode the received signal in addition to performing other functions of the signal processing. On the transmitting tract processor 230 main band performs coding and modulation of the data received from processor 240, and delivers outbound RF signal in the RF transceiver 220.

In a different implementation, the processor 240 receives the location ID from the data, reset the updated processor 230 baseband frequencies. As described above, the location ID may be a country code, passed a cellular base station, information about the world time zone, network address or similar data, indicating a specific geographic area. The memory 250 stores information for determining the availability of one or more regional satellite systems, as well as the IDs of specific regional satellites. Additionally, the memory 250 may store the search ranges in the Doppler mode, regional satellites at specific locations. In some embodiments, the implementation of the memory 250 includes a non-volatile memory element, such as flash memory or battery-backed static random access memory (SRAM).

Figa-3B show an exemplary structure 300 of data that can be used to deliver information about a partner in a regional satellite system. Each data structure may include an array of individual data elements and can be stored in memory 250 for access by processor 240. For example, the structure 300 data may include data elements for each satellite in each regional satellite system. In some embodiments, the implementation of the memory 250 stores multiple different when ructur 300 data each of which may be indexed according to one or more location IDs, and which can be updated by the processor 240.

Structure 300A data includes approximate information about artificial satellites in regional satellite system, organized by value Country_Code 310 (country code). As shown, the values RNSS_ID 320, SV_Name 330 and SV_ID 340 are provided for regional satellites code 310 of the country. In one embodiment, code 310 of the country corresponds to the list of mobile country codes (MCC), such as published in ITU E.212 (recommendation 212 from the International telecommunication Union). RNSS_ID 320 corresponds to a specific regional satellite system such as WAAS, EGNOS, MSAS, QZSS, etc. SV_Name 330 is the name of a specific artificial satellite in RNSS specified by RNSS_ID. SV_ID 340 is an identifier, such as a pseudo-random number (PRN) code corresponding PRN used regional artificial satellite to encrypt their transmissions. Orbital 350 is used to indicate whether artificial satellite (SV_Name) at geosynchronous, geostationary or other of the earth's orbit. For artificial satellites in geostationary orbit in the range of 360 search in the Doppler mode can be zero or omitted. Otherwise, the range of 360 search in the Doppler mode may indicate EIT is the group for use in limiting the search of a carrier signal SV_Name 330 in the location specified by code 310 of the country.

For illustrative purposes, the structure of the data 300A is shown with sample data elements for code 208 country (France), 441 (Japan) and 505 (Australia). France is in Europe, and, thus, RNSS_ID corresponding code 208 of the country, is EGNOS. Regional satellite system EGNOS satellites AOR-E, ARTEMIS and IND-W identified as a potential candidate search locations in France. A pseudo-random number codes EGNOS satellites are 120, 124 and 126, respectively. As indicated, these satellites support geostationary orbit (GEOSTAT), and, therefore, the Doppler shift is usually very small. For example, Doppler shift associated with the artificial satellites WAAS in the United States may be on the order of about ±40 m/s (i.e., the frequency shift corresponding to the relative velocity of the satellite to the receiver, about ±40 m/s). Thus, in some embodiments, implementation, zero Doppler search can be used for regional geostationary satellites. In other embodiments, the implementation structure 300 can store data more accurately measured value of the Doppler shift and/or ranges of Doppler search mode for this regional artificial sat the ka in each geographic location.

As described above, Japan is in the coverage area of regional satellite systems MSAS and QZSS. Thus, the code 441 country includes information about artificial satellites in both regional satellite systems. A sample item data for Japan indicates the availability of an artificial satellite QZS1 in QZSS system. Approximate data element indicates that the data transmitted by QZS1 encoded using a pseudo-random number code 183 that QZS1 is in geosynchronous (GEOSYNC) orbit, and that the search range in the Doppler mode locations in Japan of approximately ±225 m/S.

Finally, an exemplary data element for code 505 country (Australia) is included for comparison. As indicated, code 505 country is also located in the coverage area QZSS and may be able to receive satellite signals from QZS1 using a pseudo-random number code 183. However, in Australia it may be necessary to explore a wider range of frequencies in order to detect QZS1 signal. Thus, an exemplary data element indicates that the satellite QZS1 potentially available for code 505 country and what the corresponding value of the search range in the Doppler mode is approximately ±550 m/s for this location.

Figv shows an alternative structure 300B data that can be used in AWANA, to store the information about the availability and identity of the regional satellites. Structure 300B data can be stored in memory 250 and, in some cases, may Supplement or replace the structure 300A data. Each data element includes a field Time_Zone 380 indicating the relevant geographical region. For each time zone regional satellite system (RNSS_ID), artificial satellite (SV_Name) and a pseudo-random number are identified, as discussed earlier. The visibility index (Visibility_Ndx 390) is also available. As the world's time zones are meridianal part of the Earth, the visibility of the satellite can be changed within a specific time zone.

To illustrate this point, shows the approximate element data for the time zone UTC+01. UTC+01 includes both Italy and Namibia. While EGNOS satellites are visible from Europe (and parts of North Africa), they can be invisible anywhere else on the African continent. Thus, Visibility_Ndx 390 provides an indication of the likelihood that specific regional satellite is visible from locations in a specific time zone. Here Visibility_Ndx 390 indicates 60% chance of receiving positioning data from a satellite AOR-E at locations within UTC+01 time zone. Indicator visibility may be the limit according to the population, space and other criteria related to the availability of coverage within a specific time zone.

Although discussed separately, it should be understood that the structures 300A, 300B data can be combined into one data structure, and that embodiments of the present invention may include additional data structures with characteristic location information about regional satellite systems. For example, an exemplary data structure may include a set of search keys based on the country code, time zone, network addresses, and similar identifiers. For purposes of discussion represented only a portion of each data structure. In some embodiments, the implementation structure 300 data store information about each RNSS system and its satellites in communication with each unique value of the respective identifiers on the basis of location.

Referring first to figure 2, the processor 240 uses the location ID to access the data structure (e.g., 300A, 300B) in memory 250. If it is determined that one or more regional satellite systems available, the processor 240 provides information about many of its SV processor 270 location. Among other information, the processor 240 may provide a pseudo-random number codes (or other ID manually is Katori satellites and Doppler search values for each regional SV processor 270 location, to help in the search for coded satellite signals. The processor 240 may instruct the display of RNSS and SV on the display screen of the mobile device 140. In a different implementation, the processor 240 displays a map corresponding to the location ID, which imposed the relative location of the geostationary SV and/or view tracks the orbits of geosynchronous SV.

In some embodiments, the implementation of the processor 240 is configured to update the structure 300 of the data in response to changes in regional satellite systems. For example, when regional satellites are added or removed from a specific RNSS, the processor 240 may add or remove data elements corresponding to these regional SV. Also, if the coverage area of a regional satellite system is changed, or if a new regional satellite system is available in a specific location, the processor 240 can update the data elements in the structures 300 data accordingly. Updates in the structures 300 may be performed periodically or as needed, allowing the mobile device 140 to store the current information.

The processor 270 of the positioning controls the operation of the satellite receiver 260 and determines the location of the rich device 140. The processor 270 location accepts parameters, such as PRN code and Doppler search values from the processor 240 and searches for the corresponding signals received at the satellite receiver 260. In some embodiments, the implementation of the processor 270 location mutually maps satellite signals with a signal generated locally using specific PRN SV. Since PRN-values correspond to regional SV, which serve as the geographical location, the possibility of finding a signal increases, and the mobile device 140, thus, avoids the search for regional SV, which does not provide positioning data for your current location.

In addition, the processor 270 of the positioning minimizes the range of Doppler want to explore in order to find the desired satellite signal using the Doppler search data. For example, GPS satellites, the processor 270 of the positioning may be necessary to explore different carrier frequencies, which correspond to Doppler shifts up to ±900 m/s I.e., the processor 270 of the positioning may be necessary to map adopted satellite signal with the generated internally versions of the PRN code on the different code offsets and different is CNAME values of Doppler shift, covering the range of possible Doppler shifts (two-dimensional search). The maximum of the result of the comparison corresponds to a specific shift code a received satellite signal, which can then be used to determine the location of the receiver. The initial search ("generating data") can be quite long depending on the amount of information available to the processor 270 of the positioning. However, if it is known that a particular SV is in a geostationary orbit, this additional search frequency may be reduced or eliminated (because the relative velocity of the satellite to or from the receiver is small). Similarly with geosynchronous SV processor 270 location may limit your search characteristic for the location of the Doppler range defined on the basis of the Doppler range of 360 search, which can be much smaller than the search range for global satellite systems. Thus, the processor 270 of the positioning can search regional SV using the corresponding location PRN codes and/or other identifiers of the satellites and the optimal parameters of Doppler search.

It will be understood that embodiments of the present invention can perform Hara is characteristic for the location of the search for artificial satellites based on the approximate geographic location, which can be obtained from a terrestrial source. Additional information is needed to perform the search. In particular, it is not necessary to first obtain the ephemeris data, almanac or the time information of the satellite. Efficiency is enhanced by the search signal from regional satellites, for which there is a high probability of detecting and preventing search regional satellites, which are known as unavailable. Also, the time of reception of the satellite signals can be reduced through the use depend on the location of the search range in the Doppler mode. In particular, since the disclosed technology reduces (or eliminates) the search space of the Doppler shift without the need for current information, almanac, ephemeris, or other time-dependent information about the orbit of the satellite can provide a significant advantage from the standpoint of time in cold start conditions. For example, in a particular embodiment, the satellite receiver may use a limited search range in the Doppler mode (i.e. less than the minimum search range in the Doppler mode of GNSS satellites to obtain location information associated with regional artificial satellite, before implementing TLAT access to current orbital information of the satellite (for example, current information, almanac, ephemeris and/or other orbital information, such as long-term orbital information).

Figure 4 is a block diagram of a sequence of operations showing an exemplary method 400 of determining a location for a wireless device. The method 400 positioning can be performed by a processor, such as processor 240 and/or the processor 270 of the positioning. At step 410 the first signal from the wireless device. In some embodiments, the first signal is a ground signal having the identifier indicating the geographic location. The identifier can be, for example, as a rough pointer area in which the wireless device.

At step 420, the identifier is obtained from the first signal. After that, at step 430, an identifier is used to determine the availability of regional satellite systems in the first location. This may include, for example, determining whether the first location in the coverage area of one or more regional satellite systems, such as WAAS, EGNOS, MSAS and QZSS. If the first location is within the coverage area of one or more regional satellite systems, retrieves information about a specific artificial satellite is H. At step 440 satellite ID and the search range in the Doppler mode, regional satellites, defined as available in the first location are retrieved from memory or another storage device accessible to the wireless device. In some embodiments, the implementation of the information about the regional satellites is stored in non-volatile memory of the wireless device.

At step 450, the second signal comprising signals from one or more satellites, taken in the satellite receiver, and searches for regional satellites using information retrieved from memory. The search may include the formation of reference signals in a wireless device using PRN codes for specific regional satellites and mutual comparison of reference signals with signals received from the satellite receiver to receive the location information. The search range in the Doppler mode may limit the frequencies that are investigated by using the reference signals. Thus, the target is the search for these regional satellites serving the first location, and the search space is determined according to the first location. In addition, the search for regional satellites on the basis of the months is omolojeniya can be executed in parallel with the search for global positioning satellites, to further improve the search results.

At step 460, the location of the wireless device is determined using the information obtained from the satellite signals. For example, the location may be determined according to well known technology in which mapping is used to determine the time shifts of the code of received signals for a multitude of artificial satellites, and time shifts of the code are used to determine the distances between the satellites and the receiver, which, in turn, can be used to determine the location. In some cases, such as with QZSS system, regional artificial satellites themselves can provide sufficient data positioning to get the coordinates of the location of the wireless device. In other cases, regional artificial satellites can only provide correction data, which can be supplemented with positioning information from global artificial satellites. In some embodiments, the implementation of one or more satellite signals can be used together with additional information to obtain the position of the wireless device; for example, time information signal or delay on the full signal to ground East nikov can be used together with satellite signals to determine location.

The various illustrative logical blocks, modules, and circuits described in connection with the disclosures provided in this document variants of implementation, may be implemented or performed using a General-purpose processor, digital signal processor (DSP), a processor-based architecture, a reduced instruction set (RISC), a specialized integrated circuit (ASIC), programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components or any combination thereof designed to perform the operations described in this document functions. The General-purpose processor may be a microprocessor, but in an alternative embodiment, the processor can be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a variety of microprocessors, one or more microprocessors with a DSP core, or any other such configuration.

A software module can be permanently reside in RAM memory, flash memory, nonvolatile memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other forms of the media storage data, known in the art. Exemplary media storage connected to the processor so that the processor can read information from and write information to the media storage. In an alternative embodiment, the media storage can be built into the processor.

The stages of the method, process, or algorithm described in connection with the disclosures provided in this document variants of implementation, can be implemented directly in hardware, in a software module, executable by a processor, or combinations thereof. The various stages or steps in the method or process can be performed in the order shown, or may be performed in a different order. Additionally, one or more of the steps of the process or method may be omitted, or one or more of the steps of the process or method can be added to methods and processes. An additional stage, the unit or activity may be added in the beginning, end, or between the existing elements of the methods and processes.

The above description of the disclosed embodiments is provided to enable any ordinary person skilled in the art to make or use the invention. Various modifications to these embodiments, the implementation will be obvious to an ordinary person skilled in the field of technology and General PR is ncipi, defined in this document can be applied to other variants of implementation, without going beyond the essence or scope of the invention. Thus, the invention is not meant limited shown in this document variant implementation, and must satisfy the widest scope, the relevant principles and new features revealed in this document.

1. The method of determining the location of a wireless device, comprising stages, which are:
- take the first signal by the wireless device;
- get the identifier that indicates the first location from the first signal, and the above-mentioned identifier contains a country code corresponding to the aforementioned first location;
- retrieve information associated with at least one artificial satellite using the country code, and at least one artificial satellite is owned regional satellite system, orbital type which is geosynchronous, and said information includes a search range in the Doppler mode corresponding to the aforementioned at least one artificial satellite;
- take the second signal by the wireless device;
- process the second signal to obtain the first information with unicolore signal for at least one artificial satellite, the processing of the second signal contains the phase in which to limit the search of the first satellite signal based on the aforementioned search range in the Doppler mode; and
- determine the location of the wireless device at least partially based on the information of the first satellite signal.

2. The method according to claim 1, wherein processing the second signal to obtain the data from the first satellite signal includes a step in which process the second signal using a limited search range in the Doppler mode before performing access to current satellite orbital information.

3. The method according to claim 1, wherein receiving the first signal further comprises the step, which take the signal from the cellular base station; these identifier contains the global time zone of the first location or at least part of the network address of the wireless device.

4. The method according to claim 1, additionally containing a stage on which the update information associated with at least one artificial satellite.

5. The method according to claim 1, wherein retrieving information associated with at least one artificial satellite further comprises a stage on which access the data in the nonvolatile memory device of a wireless network is on a device.

6. The method according to claim 1, wherein information associated with at least one artificial satellite, contains a pseudo-random number code (PRN), used to encode the first satellite signal, and in which the processing of the second signal includes the steps are:
- form a reference signal using a pseudo-random number code and
- mutually compare the second signal and the reference signal.

7. The method according to claim 1, in which regional satellite system is selected from the group consisting of global system refinements and corrections (WAAS), European geostationary navigation service coverage (EGNOS), MTSAT satellite system specification (MSAS), satellite system Quasi-Zenith (QZSS), automatically adjust the GPS system (GAGAN) and Indian regional navigational satellite system (IRNSS).

8. The method according to claim 1, additionally containing phases in which
during the information of the first satellite signal to process the second signal to obtain information of the second satellite signal to the second artificial satellite, the second satellite is part of a global navigation satellite system (GNSS).

9. The method according to claim 1, wherein the first location is a country within the coverage area of the satellite system Quasi-Zenith (QZSS), and the method further comprises the steps is as:
- remove the search range in the Doppler mode corresponding to at least one artificial satellite for the country specified by the identifier; and
- limit the search of the first satellite signal on the basis of the search range in the Doppler mode.

10. Wireless device to determine the location that contains:
the first receiver is configured to accept the information-carrying signal having a first identifier that indicates the first location;
the second receiver is made with the possibility to make many of the satellite signals and determine the location of the wireless device using information from a variety of satellite signals, the second receiver receives the mentioned at least one of the many satellite signals using the second identifier for satellites that are part of regional satellite systems, orbital type which is geosynchronous, and mentioned the first identifier is used to retrieve the search range in the Doppler mode corresponding to the aforementioned first location, and said second receiver limits the search to carrier referred to at least one of the many satellite signals based on the aforementioned search range in stage serovskom mode; and
- the processor is configured to receive a first identifier from the carrier information signal, and referred to the first identifier contains a country code corresponding to the aforementioned first location, and to utilize the country code to retrieve the second set of identifiers from the memory of the wireless device, and the second identifiers contain the search range in the Doppler mode.

11. The wireless device of claim 10, in which the second identifiers associated with the artificial satellites that are part of at least one regional satellite system, with the first location in the coverage area, and in which the first receiver receives the information-carrying signal from a cellular base station.

12. The wireless device of claim 10 in which the first identifier includes a world time zone first location.

13. The wireless device of claim 10 in which the first identifier includes a portion of the network address of the wireless device, and the processor is configured to extract the second identifiers from the memory on the basis of the network address.

14. The wireless device of claim 10 in which the memory includes non-volatile memory, and the second identifiers are stored in non-volatile memory.

15. Wireless device p is paragraph 10, in which the processor is configured to update the first and second identifiers in memory.

16. The wireless device of claim 10, in which the second identifiers include at least one pseudo-random number (PRN) code for satellites that are part of a regional satellite system.

17. A wireless device according to clause 16, in which the second receiver is configured to generate the reference signal by using one of the at least one pseudo-random number and mutually compare at least one of the set of satellite signals with a reference signal.

18. The wireless device 10, in which regional satellite system is selected from the group consisting of global system refinements and corrections (WAAS), European geostationary navigation service coverage (EGNOS), MTSAT satellite system specification (MSAS), satellite system Quasi-Zenith (QZSS), automatically adjust the GPS system (GAGAN) and Indian regional navigational satellite system (IRNSS).

19. The wireless device of claim 10, in which the second receiver receives signals from a global navigation satellite system (GNSS) with the help of third identifiers and simultaneously receives at least one of the many satellite signals using the second identifier.

20. Wirelessly the device of claim 10, in which the first identifier indicates the country and regional satellite system is a satellite system of Quasi-Zenith (QZSS), and the processor is configured to extract the search range in the Doppler mode, the respective artificial satellites QZSS and the country specified by the identifier, and in which the second receiver limits the search to the carrier frequency of at least one of the many satellite signals based on the search range in the Doppler mode.

21. Machine-readable media encoded with one or more instructions to determine the location of the wireless device, one or more instructions include instructions which when executed by one or more processors induce one or more processors to perform the steps:
reception of the first signal by the wireless device;
- get the identifier that indicates the first location from the first signal, and the above-mentioned identifier contains a country code corresponding to the aforementioned first location;
- retrieve information associated with at least one artificial satellite using the country code, and at least one artificial satellite is owned regional satellite system, orbital type which is goosing the district, moreover, such information contains the search range in the Doppler mode corresponding to the aforementioned at least one artificial satellite;
reception of the second signal by the wireless device;
processing the second signal to obtain a first satellite signal to at least one artificial satellite, and processing the second signal contains the phase in which to limit the search of the first satellite signal based on the aforementioned search range in the Doppler mode; and
- determine the location of the wireless device at least partially based on the information of the first satellite signal.

22. Wireless device to determine the location that contains:
the tool receiving carrier information signal having a first identifier that indicates the first location;
the tool receiving multiple satellite signals and determine the location of the wireless device using information from the satellite signals, at least one of the many satellite signals received with the help of second identifiers for satellites that are part of regional satellite systems, orbital type which is geosynchronous, and mentioned first identificat the PRS is used to retrieve the search range in the Doppler mode, corresponding to the aforementioned first position, and said tool receiving restricts the search to carrier referred to at least one of the many satellite signals based on the aforementioned search range in dopplergram mode; and
- means for obtaining a first identifier from the carrier information signal, and referred to the first identifier contains a country code corresponding to the first mentioned location, and use of the country code to retrieve the second set of identifiers from a storage means of the wireless device, and the second identifiers contain the search range in the Doppler mode.



 

Same patents:

FIELD: radio engineering, communication.

SUBSTANCE: mobile objects and a control station are fitted with navigation satellite system signal receivers which provide communication with satellites. Connections between base stations and mobile objects are provided through broadband radio access equipment. Connections between the control station and base stations are provided through synchronous fixed communication equipment and an optical link. Using a geoinformation system, coordinates of mobile objects obtained from satellites, calculated differential coordinate adjustments, measurement data from telecommunication equipment of a broadband radio access network and time synchronisation of the navigation satellite system with equipment of the broadband radio access network, the information processing unit of the control station determines the exact location of the mobile object in real-time using software.

EFFECT: high accuracy of locating mobile objects in real-time and improved functional capabilities of the system.

1 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method includes steps of detecting a first navigation signal at a reference location; estimating timing of a bit edge of a data signal modulating a second navigation signal received at said reference location based on the first navigation signal; and performing pre-detection integration to detect said second navigation signal over an interval of said second navigation signal based, at least in part, on said estimated timing of said bit edge, wherein said first navigation signal is transmitted according to a first format and said second navigation signal is transmitted according to a second format different from said first format.

EFFECT: reduced ambiguities in received SPS signals.

26 cl, 15 dwg

FIELD: radio engineering, communication.

SUBSTANCE: system has a space segment in form of navigation spacecraft, a transponder mounted on the mobile object and a ground segment in form of a ground measuring station. The transponder has a navigation spacecraft signal receiver, a carrier frequency converter and a relayed signal transmitter. The ground measuring station has a transponder signal receiving and processing unit, a unit for calculating coordinates of the transponder, as well as a correcting unit and a navigation spacecraft signal receiving and processing unit. The correcting unit has a unit for calculating ionospheric delay and a unit for calculating ephemeral-time support error of the navigation spacecraft, a weather data unit, an ionosphere data unit and a transponder position pre-calculating unit.

EFFECT: eliminating restrictions on a navigation coverage area with differential accuracy mode in conditions of providing radio communication from a transponder mounted on an object to a ground measuring station for any motion path of the mobile object.

3 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method employs a high-precision ground-based stationary control station with predetermined disc location parameters, wherein navigation satellite signals are received through an antenna module, a radio signal distributor and a group of receivers, which are components of the assembly; at each receiver, received signals are amplified, the useful component is selected from a mixture with interference and noise and the obtained signal is converted to an intermediate frequency by a radio frequency module. Analogue-to-digital conversion is then performed at an analogue-to-digital converter; data are analysed along with meteorological sensor data and signals of the quality of navigation information and adjustments are selected. Each transmission is received simultaneously at a central antenna and n additional antennae, spaced apart by m metres from the central antenna, and the received ranging codes with one radiation time are averaged before processing, without considering the code which corresponds to the signal with the longest delay for each navigation satellite.

EFFECT: reducing effect of multibeam propagation of radio signals of navigation satellites on quality of navigation information.

1 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method involves receiving signals for each satellite, taking code and phase undifferentiated measurements (10), determining broadband uncertainties in a coherent manner for all satellites (11, 12, 13) using broadband shifts associated with satellites and obtained from a reference system, and determining the geographical position of a receiver using code and phase measurements and matched broadband uncertainties (16, 18). Determination of the geographical position involves determining (16) pseudo-distance through a non-ionosphere combination of code measurements and the difference between phase measurements with compensated broadband uncertainty, wherein the combination is noise-optimised. In order to determine pseudo-distance, satellite clock signal values associated with the non-ionosphere combination are obtained from the reference system.

EFFECT: high accuracy of position finding solution.

11 cl, 3 tbl, 3 ex

FIELD: radio engineering, communication.

SUBSTANCE: location coordinate values are calculated with low accuracy and if high-accuracy coordinate determination is impossible, an adjustment is made to the calculated low-accuracy values in order to determine the final coordinate values, wherein the adjustment used is the difference between calculated low-accuracy coordinate values and calculated high-accuracy coordinate values at a point in time when high-accuracy determination of location coordinate values was last possible, wherein the possibility of high-accuracy location coordinate determination is constantly checked, and if possible, coordinate values are calculated with high accuracy and the calculated adjustment is once more applied to the calculated high-accuracy coordinate values to obtain a new final location coordinate value.

EFFECT: providing smooth transition from one method of determining location coordinates to another without abrupt change in coordinate values, which ensures more reliable control of transportation vehicles and similar objects.

15 cl, 6 dwg

FIELD: radio engineering, communication.

SUBSTANCE: monitoring system (1) has at least one monitoring satellite (S2) lying on an orbit (O2) at a lower height than satellites (S1) in the group (2) of satellites so as to be able to receive positioning signals emitted towards the Earth (T) by said satellites (S1), and has a processing unit (11) for checking integrity of said received positioning signals using position information which is separated from said signals for this purpose.

EFFECT: providing users with information relating to quality of positioning signals by checking integrity of the monitored positioning system without local errors of positioning signals from monitoring stations.

10 cl, 5 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method involves receiving signals from navigation spacecraft, amplification and correction thereof, monitoring codes and frequencies, calculating pseudoranges and pseudovelocities, correcting ionosphere errors and calculating coordinates of the consumer. The value of the ionosphere adjustment is determined by an empirical model of the required ionosphere parameter based on known parameters (geographic coordinates and time) and an additional parameter - solar activity index with one-time processing of the array of values of vertical PES in the ionosphere. Corresponding numerical values are selected from arrays of values of vertical PES, provided by different centres, followed by compression, filtration of the obtained array and forming an input numerical data array for subsequent calculation of ionosphere adjustments and absolute values of coordinates of the consumer. During one-time processing of the array of values of vertical PES in the ionosphere, input data from IONEX files are used to form a PES mode.

EFFECT: high accuracy of determining coordinates of a consumer by eliminating ionosphere errors.

4 cl, 5 dwg

FIELD: radio engineering, communication.

SUBSTANCE: steps are executed for providing modified format Global Navigation Satellite System (GNSS) Sensitivity Assistance (SA) information derived from predicted GNSS signal data according to a type of GNSS system, the type of GNSS system having a native formatting for GNSS signals, which has certain characteristics and the modified format GNSS SA information has the predicted GNSS signal data encoded without one or more of the characteristics used in the native formatting, and sending the modified format GNSS SA information over a communication link from a location server for a mobile station having a GNSS receiver capable of receiving and decoding native formatted signals according to the type of GNSS system.

EFFECT: providing assistance information signals, high sensitivity, associated with one or more positioning systems, and high sensitivity of the receiver due to prediction of Global Navigation Satellite System signal data.

65 cl, 4 tbl, 8 dwg

Navigation receiver // 2481596

FIELD: radio engineering, communication.

SUBSTANCE: two or more satellite positioning system (SPS) signals are received in a receiver at associated two or more carrier frequencies and said two or more received SPS signals are down-converted in a single channel of the receiver according to the common heterodyne frequency.

EFFECT: enabling reception and processing of signals of different satellite positioning systems in one receiving channel at different frequencies.

17 cl, 7 dwg

FIELD: physics.

SUBSTANCE: network element (M) for generating backup data has a control element (M.1) for generating back up data relating to one or more base stations (S1, S2) of at least one navigation system, and a transmitting element (M.3.1) for transmitting back up data over a communication network (P) to a device (R). The positioning device (R) has a positioning receiver (R3) for positioning based on one or more signals transmitted by base stations (S1, S2) over at least one of the said satellite navigation systems; a receiver (R.2.2) for receiving back up data relating to at least one navigation system from the network element (M); and an analysis element (R.1.1) adapted for analysing the received back up data in order to detect information relating to the status of the said one or more signals from the base stations (S1, S2) of the navigation system. The said information relating to the status of the said one or more signals from the base stations (S1, S2) contain indicators to the base station (S1, S2) to which the signal relates, and the said status, which indicates suitability of the signal for using. The device (R) is adapted such that, the signal indicated as unsuitable for use is not used for positioning.

EFFECT: increased accuracy of determining location by providing the positioning device with a list of defective signals transmitted by a specific satellite.

29 cl, 6 dwg, 5 tbl

FIELD: radio engineering.

SUBSTANCE: there determined is location of reference station in reference station according to signals received in it from complex of satellites, there determined is location of user receiver where user is located on the basis of measurement results received in it and on the basis of modification values calculated in reference station for correction of errors and there calculated is vector of relative position by calculating difference between location of reference station and location of the user.

EFFECT: improving determination accuracy of object location.

19 cl, 9 dwg

FIELD: physics.

SUBSTANCE: proposed method comprises reception of radio signals, analysis of output data of a group of receivers in combination with the data of weather pickups, and generation of navigation data quality signals and corrections to said data for its consumers.

EFFECT: higher probability of detecting intolerable abnormality of navigation satellite signals coming from all operated navigation systems GLONASS, GPS and GALILEO.

2 cl, 1 dwg

FIELD: physics.

SUBSTANCE: navigation system calculates positions which are corrected using complementary filters, each of which excludes data coming from one of the satellites when a fault is detected in one of the satellites. The complementary filter which excludes this satellite becomes the main filter and the other complementary filters are initiated by the new main filter.

EFFECT: reduced computational load in the navigation system.

5 cl, 2 dwg

FIELD: physics.

SUBSTANCE: to receive a radio-navigation signal modulated by a signal containing a BOC (n1,m) component and a BOC (n2,m) component, correlation between the current signal at the reception point and the modulating signal, and correlation between the shifted signal at the reception point and the modulating signal is carried out in a time interval with duration T. The current signal at the reception point is generated in form of a binary signal containing one segment of the BOC (n2,m) signal with overall duration (1-αA)T during the said time interval. The shifted signal at the reception point is generated in form of a binary signal containing one segment of the BOC (n1,m) signal with overall duration αBT during the said time interval.

EFFECT: high accuracy of synchronising a received signal with a reference signal.

13 cl, 9 dwg

FIELD: information technology.

SUBSTANCE: mobile communication device uses a position finding method using a position finding filter, for example a Kalman filter which is initialised by measurements from reference stations, for example satellites and/or base stations, which can be obtained during different periods. Accordingly, the position finding filter can be used to evaluate the position without the need to first obtain at least three different signals during the same measurement period.

EFFECT: high efficiency and reliability of position finding for mobile receivers of a global positioning system in unfavourable signal propagation conditions when coincidence of range measurements may not occur on time.

40 cl, 9 dwg

FIELD: information technology.

SUBSTANCE: request for auxiliary data issued by a mobile station is received at a server station and in response to the request, the server station sends to the server station ephemeral data as part of auxiliary data. After receiving the request for auxiliary data issued by the mobile station, the server station decides on the possibility of the mobile station reaching given accuracy for determining location is provided with transmitted ephemeral data. In the affirmative case, the server station sends transmitted ephemeral data to the mobile station. In the negative case, the server station sends to the mobile station long-term ephemeral data instead of transmitted ephemeral data as part of the requested auxiliary data. The long-term ephemeral data are extracted from forecasts of orbit satellites and they have validity interval which is sufficiently long compared to the ephemeral data transmitted by satellites.

EFFECT: high accuracy of position finding.

8 cl, 3 dwg

FIELD: physics.

SUBSTANCE: device includes a GPS/GLONASS receiver, an antenna, a user interface (keyboard, display, sound), a communication interface, nonvolatile memory, a microcontroller, consisting of a unit for calculating the coordinate vector from code measurements, a unit for calculating the increment of the coordinate vector from phase measurements, a filter unit based on a least-square method, a unit for calculating a specified coordinate vector from the filtration results, a unit for working with interfaces, where the microcontroller includes a unit for analysing stability of the phase solution, a unit for evaluating duration of measurements and geometrical factor of the constellation of satellites, as well as a correcting unit consisting of a counter for counting stable solutions and a decision unit for deciding on continuing measurements, interfaces for time marking external events and outputting the second mark.

EFFECT: highly accurate determination of coordinates of a receiver based on differential processing of phase measurements with complete elimination of phase ambiguity.

1 dwg

FIELD: physics.

SUBSTANCE: device includes a GPS/GLONASS receiver, an antenna, a user interface (keyboard, display, sound), a communication interface, nonvolatile memory, a microcontroller, consisting of a unit for calculating the coordinate vector from code measurements, a unit for calculating the increment of the coordinate vector from phase measurements, a filter unit based on a least-square method, a unit for calculating a specified coordinate vector from the filtration results, a unit for working with interfaces, where the microcontroller includes a unit for analysing stability of the phase solution, a unit for evaluating duration of measurements and geometrical factor of the constellation of satellites, as well as a correcting unit consisting of a counter for counting stable solutions and a decision unit for deciding on continuing measurements, interfaces for time marking external events and outputting the second mark.

EFFECT: highly accurate determination of coordinates of a receiver based on differential processing of phase measurements with complete elimination of phase ambiguity.

1 dwg

FIELD: physics.

SUBSTANCE: navigation is performed using low earth orbit (LEO) satellite signals, as well as signals from two sources of ranging signals for determining associated calibration information, where a position is calculated using a navigation signal, a first and a second ranging signal and calibration information. Also possible is providing a plurality of transmission channels on a plurality of transmission time intervals using pseudorandom noise (PRN) and merging communication channels and navigation channels into a LEO signal. The method also involves broadcasting a LEO signal from a LEO satellite. Also disclosed is a LEO satellite data uplink. The invention also discloses various approaches to localised jamming of navigation signals.

EFFECT: high efficiency and ensuring navigation with high level of integration and security.

14 cl, 34 dwg

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