Micromodule for frequency conversion of signals of satellite radio navigational systems

FIELD: radio engineering, applicable in receivers of signals of satellite radio navigational systems.

SUBSTANCE: the micromodule has a group of elements of the channel of the first frequency conversion signals, group of elements of the first channel of the second frequency conversion of signals, group of elements of signal condition of clock and heterodyne frequencies and a group of elements of the second channel of the second frequency conversion signals.

EFFECT: produced returned micromodule, providing simultaneous conversion of signals of standard accuracy of two systems within frequency ranges.

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The invention relates to electrical engineering and can be used in the receivers of signals from satellite navigation systems (SNS), providing simultaneous reception of signals SRNS GLONASS (Russia) and GPS (USA).

As is well known (see, for example, [1] the “on-Board satellite navigation device” / Evecutive, Innaminka, Aigeldinger etc.// M, Transport, 1988, s-15, [2] - “Network satellite navigation system”/ Usershave, Ali, Nevanac etc. // M, Radio and communications, 1993, p.35), the signals of the SRNS GPS is transmitted in two frequency bands in the range of the L1 carrier frequency of 1575.42 MHz) and in the range of L2 (carrier frequency 1227,6 MHz). These signals are modulated in phase “a” and “P” codes - codes “standard” and “high” accuracy. The “C/a code is formed on the law of the pseudo-random sequence (SRP) with a period of 1 MS and a frequency of 1.023 MHz, and “P” code is formed according to the law of the SRP with a period of about 7 days and a clock frequency 10,23 MHz. Frequency band signals SRNS GPS L1 band (defined by four zeros of the spectrum in terms of modulation “And” code) is 1571,328-1579,512 MHz and in the range of L2 - 1223,508-1231,692 MHz. To identify the signals radiated by different navigation artificial Earth satellites (NISS), SRNS GPS uses code division signals.

In contrast to the SRNS GPS NRC is GLONASS, see, for example, [2, p.28-30], adopted frequency division signals radiated by different NICS. The signals of different NICS SRNS GLONASS are identified by the value of the nominal carrier (lettered) frequency lying in the designated frequency range. For lettered frequencies (j=1, 2) frequency range F1 and F2. Ratings lettered frequencies are generated by the rule:

fj,i=fj,0+iΔfj,

where fj,i- nominals lettered frequencies;

fj,0- zero lettered frequency;

i - numbers literal in each of the ranges;

Δfj- the interval between lettered frequencies.

For the frequency range F1 (near 1600 MHz) - f1,0=1602 MHz, Δf1=0,5625 MHz. For frequency band F2 (near 1240 MHz) - f2,0=1246 MHz Δf2=0,4375 MHz. Distribution lettered frequencies among NISS SRNS GLONASS set almanac transmitted in the frame of official information.

As in GPSr GPS signals emitted NESS SRNS GLONASS modulated codes SRP of two types - “ST” ID (standard accuracy) with a clock frequency of 0,511 MHz and “W” code (high precision) with a clock frequency of 5.11 MHz. In this case, the frequency band signals SRNS GLONASS defined by four zeros of the spectrum when the modulation “ST” code, take on the axis of the frequencies of these bands is in the range F1 to rooms letters from i=-7 to i6 - bandwidth 1596,0185÷1606,294 MHz in the range F2 to rooms letters from i=-7 to i=6 - band 1240,8935÷1249,794 MHz in the range F1 to rooms letters from i=-7 to i=12 - bandwidth 1596,5295÷1610,794 MHz.

Despite the differences between the two systems due to the frequency division signals in the SRNS GLONASS and code division signals in the SRNS GPS proximity ballistic build orbital constellation NIST and used frequency range allows you to design integrated operating on the signals of both systems, navigation equipment for consumers. The achieved result is to increase the reliability, validity and accuracy of the positioning, which is provided, in particular, due to the possibility of choice of work constellations NESS with the best values of the geometrical factors [2, p.160]. This integration can be carried out at the final stage of digital signal processing SRNS GLONASS and GPS with obtaining integrated navigation information, and the initial stage of their analog processing, i.e. at the stage of frequency conversion of signals in the range used in subsequent digital processing. The second case is the subject of consideration in this application.

Frequency conversion of signals in the receivers of SRNS GLONASS and GPS is commonly carried out on superheterodyne circuit with double frequency conversion.

For example, in [3] - EP No. 0523938, H 03 D 7/16, G 01 S 5/14, 20.01.1993 (Fig.1, 2), [4] - US No. 5606736, N 04 1/26, 25.02.1997 (Fig.1, 2), [5] - US No. 5832375, N 04 1/26, 03.11.1998 (Fig.1, 2) presents options for single-channel schemes for frequency conversion of signals of GLONASS/GPS. These schemes contain two series-connected frequency Converter, each of which includes your mixer and your filter amplifier, and the reference inputs of the mixers are connected to the corresponding outputs driver signals heterodyne frequencies. In these schemes is implemented by a switched mode conversion signal SRNS GLONASS or GPS at the relevant frequency heterodyne signals. For this shaper signals heterodyne frequencies made by the scheme operated generator with a variable frequency phase-locked loop frequency relative to the frequency of the comparison signal generated from the external reference oscillator, and contains the loop-locked loop controlled frequency divider (frequency divider with a configurable dividing ratio). Setting using an external control signal a certain division ratio in a controlled frequency divider and, therefore, the ring-locked loop controlled generator, provide the output of the controlled oscillator signal with a frequency corresponding to the frequency of the signal sravnenie the (frequency reference) with regard to the division factor set. This signal is then generated by dividing the frequency) is required heterodyne signals. Between them are presented in[3], [4], [5] diagram of frequency conversion of signals of GLONASS/GPS differ ratings heterodyne frequency nominal frequency of the reference oscillator, building diagrams dividing the frequency range of values of the frequency comparison and the values of the ratios have managed frequency dividers. A common feature of these schemes is the inability of simultaneous (parallel) conversion of signals from both systems.

Known, see, for example, [6] - EN No. 2146378, G 01 S 5/14, 10.03.2000, 3, [7] - EN No. 2178894, G 01 S 5/14, 27.01.2002, 4, dual-channel circuit frequency conversion of signals in the receivers of SRNS GLONASS and GPS, which provides simultaneous (parallel) conversion of signals from both systems. These schemes have a common channel of the first frequency conversion signal SRNS GLONASS and GPS and connected to its output two separate channel of the second frequency conversion signal SRNS GLONASS and GPS. Common channel includes a first frequency Converter, which is made on the basis of the first mixer. Each of the separate channels contains your filter first intermediate frequency, your mixer with a filter of the second intermediate frequency and its analog-to-digital Converter. The reference inputs of all of the mixers are connected the to the respective outputs of the driver signals of clock and heterodyne frequencies, made on the basis of the controlled oscillator with a variable frequency phase-locked loop frequency relative to the frequency of the comparison signal generated from the reference oscillator. The frequency of the output signal of the controlled oscillator is determined by the division ratio of the ring frequency-phase-locked loop, which, in turn, is determined by the ratios of the frequency dividers included in this ring. The output signal of the controlled oscillator is used to generate from it (by dividing the frequency of clock and heterodyne signals.

In this dual-circuits frequency conversion of signals SRNS GLONASS and GPC choice of a specific option scheme of the formation of signals of clock and heterodyne frequencies (i.e. frequency selection and comparison of the frequency of the output signal of the reference oscillator, the choice of nominal heterodyne frequency, the frequency division output signal of the controlled oscillator and the values of the ratios of the frequency dividers) is a multivariate and not formalized task, which is solved in each case based on the requirements for the formation of a certain “frequency plan” (allocation of the frequency bands in the process of frequency conversion signals) subject to the conditions and characteristics of the subsequent digital clicks the processing of signals, as well as requirements for hardware components and features of the design. In this application, this task is solved with respect to the module, designed for use in dual schemes for frequency conversion of signals in the receivers of SRNS GLONASS and GPS.

The use of micromodules in the structure diagrams of frequency conversion of signals in the receivers of SRNS GLONASS and GPS is a promising direction for their miniaturization, allowing to reduce the dimensions of the analog part, for example, in comparison with known designs of receivers of SRNS GLONASS and GPS, is presented in [8] - EN NO. 2172080, N 05 TO 1/00, 1/11, 1/14, 3/46, 10.08.2001, [9] - EN NO. 2182408, N 05 TO 1/00, 1/11, 1/14, 3/46, 10.05.2002, [10] - EN NO. 2188522, N 05 TO 1/14, N 01 P 11/00, 27.08.2002, [11] - US No. 6437991, N 05 To 1/14, 20.08.2002, where schemes for frequency conversion of signals GPSr performed on discrete elektroradioelementy and standard chips.

A typical example of a functional diagram of the module, the schemes used in the frequency conversion signal receivers SRNS GPS frequency L1 band, presented in [12] - US No. 5148452, H 03 D 3/02, H 04 L 27/06, 15.09.1992 (Fig.2), [13] - US No. 5175557, G 01 S 5/02, N 04 7/185, N 04 15/00, 29.12.1992 (Fig.2), [14] - US No. 5192957, N 04 7/185, G 01 S 5/02, 09.03.1993 (Fig.2). This module (“RF integrated circuit”) includes sequentially connected to the input amplifier and the first mixer, then soedineniya first intermediate frequency, the second mixer and the amplifier of the second intermediate frequency, and the elements of the driver signals of clock and heterodyne frequencies serially connected controllable oscillator, the frequency divider “40”frequency divider “2”, the frequency-phase detector and filter signal locked loop frequency controlled generator serving for the formation of the output signal of the frequency-phase detector control signal for the controlled oscillator and buffer amplifier connected to the output of the frequency divider “by 40”. The output of the controlled oscillator produces the output signal of the first heterodyne frequency. This output is coupled to the reference input of the first mixer. The output of the frequency divider 40 constitutes the output signal of the second heterodyne frequency. This output is coupled to the reference input of the second mixer and through a buffer amplifier with an output clock output modules. The input of the input amplifier is connected to the input signal by the output module. The output of the first mixer and the amplifier input of the first intermediate frequency associated with the findings of the micro-module, intended for connection of the external filter, the first intermediate frequency. The amplifier output of the second intermediate frequency associated with the output signal output module, intended for an external filter of the second sub-the internal frequency. The filter output signal locked loop frequency of the controlled oscillator and the control input of the controlled oscillator connected with the terminals of the module designed for connection to an external element tuning of the controlled oscillator. Reference input frequency phase detector connected with the output module, intended for an external reference oscillator. The module operates at the frequency of the external reference oscillator 19,09575 MHz. In accordance with this frequency and the ring frequency of the phase locked loop is set to the desired frequency of the output signal of the controlled oscillator - 1527,66 MHz(19,09575=1527,66:40:2). The value of the first heterodyne frequency is 1527,66 MHz, and the second heterodyne frequency (clock) - 38,1915 MHz, which allows frequency conversion of signals SRNS GPS first frequency band L1. Feature of the module is that it does not stipulate the possibility of reconfiguration for frequency conversion of signals SRNS GPS second frequency range L2 or frequency conversion of signals SRNS GLONASS.

An example of a functional diagram of the module in which due to reconfiguration allows frequency conversion of signals SRNS GPS frequency L1 band signals SRNS GLONASS chastotnoj the range F1, presented in [3, Fig.3], [4, Fig.3], [5, Fig.3]. This module contains the first and second mixers, and elements of the shaper heterodyne frequency serially connected controllable oscillator, the output of which is connected to the reference input of the first mixer, the first frequency divider by 2”, the controlled frequency divider “N” and the frequency-phase detector, and is connected to the output of the first frequency divider by 2” serially connected second and third frequency dividers “2”, the inputs of which are connected to the signal input of the controlled switch to the two positions, the output of which is connected to a reference input of the second mixer. The output of the frequency-phase detector and the control input of the controlled oscillator connected with the terminals of the module, designed for external filter signal locked loop frequency controlled generator serving for the formation of the output signal of the frequency-phase detector control signal for the controlled oscillator. Reference input frequency phase detector connected with the output module, designed for signal comparison signal generated from the external reference oscillator. The output of the first mixer and a signal input of the second mixer connected with the terminals of the module, intended for connection of the external filter is silicula first intermediate frequency. Signal input of the first mixer associated with the input signal by the output module. The output of the second mixer is connected with the output signal output module. The control input of the switch to the two positions and the control input of the frequency divider “N” are connected, respectively, with the first and second control terminals of the module. A first control output module is intended for command, under the action of which the switch is installed in one of its two positions at which the division ratio in the circuit generating the signal of the second heterodyne frequency from the output signal of the controlled oscillator is set either equal to eight in the case of the conversion of signals SRNS GLONASS, or four - converting signals SRNS GPS. The second control output module is designed to supply code, which is a pre-determined division ratio of the frequency divider “N” (depending on the frequency of the reference signal and the signal selection SRNS GLONASS or GPS, and in the case of signals SRNS GLONASS - depending on lettered frequencies). This module can be used in the receivers of SRNS GPS frequency L1 band, the signal receivers SRNS GLONASS frequency band F1, and the integrated signal receivers SRNS GLONASS/GPS frequency di is the range F1/L1 (in the latter two cases, the application of the micro-module assumes the use of multiplex mode for signals SRNS GLONASS each lettered frequencies and signals SRNS GPS). The module does not provide the possibility of simultaneous (parallel) conversion of signals SRNS GLONASS and GPS, as well as frequency conversion of signals SRNS GLONASS and GPS frequency band F2/L2.

Closest to the claimed module for frequency conversion of signals in the receiver signal GPSr module is described in [15] - US No. 6345177, N 04 1/16, 1/04, 1/26, 1/06, 1/10, 05.02.2002 in which funds reconfiguration allows frequency conversion of signals SRNS GLONASS frequency bands F1, F2 or signals SRNS GPS frequency bands L1, L2. This module is adopted as a prototype.

The modules adopted as a prototype, contains a group of channel elements of the first frequency conversion of signals, the group of channel elements of the second frequency conversion signal and the element group generator of signals of clock and heterodyne frequencies.

The group of channel elements of the first frequency conversion signal contains an input amplifier, a first mixer, and the first and second amplifiers, the first intermediate frequency. The input of the input amplifier is connected to the input signal by the output module. The output of the input amplifier is connected to the signal input of the first mixer. The output of the first mixer and the input of the first amplifier, the first intermediate frequency of the light is Ana with the findings of the micro-module, intended for connection of the first external filter first intermediate frequency. The output of the first amplifier, the first intermediate frequency and the input of the second amplifier, the first intermediate frequency associated with the findings of modules designed to connect a second external filter first intermediate frequency. The first and second amplifiers, the first intermediate frequency is made with adjustable gain, their control inputs connected with the respective control terminals of the module, intended for the supply of signals to adjust the gain for this amplifier.

The group of channel elements of the second frequency conversion of signals includes sequentially connected to the second mixer, the filter of the second intermediate frequency amplifier, a second intermediate frequency, and an output Converter. The signal input of the second mixer connected to the output of the second amplifier, the first intermediate frequency. The amplifier of the second intermediate frequency is made with adjustable gain, its control input connected with the respective managing output module designed for supplying a signal to adjust the gain for this amplifier. The output Converter is implemented in the form of analog-to-digital Converter, it outputs form the group of the output signal the conclusions of the module.

The element group generator of signals of clock and heterodyne frequencies contains serially connected controlled controlled oscillator, the frequency divider “on N1, where N1=137, 140, 142, 143, and frequency-phase detector, and is connected to the output of the controlled oscillator controlled frequency divider “on N2, where N2=10, 11, and also connected to the output of the controlled frequency divider “N2” controlled frequency divider “on N3, where N3=3, 5, 7, 8. Reference input frequency phase detector is connected with the input reference output module designed to supply an external reference signal (10 MHz or 10,23 MHz) from an external reference oscillator. The output of the frequency-phase detector and the control input of the controlled oscillator connected with the terminals of the module, intended for connection, respectively, input and output external filter signal locked loop frequency controlled generator serving for the formation of the output signal of the frequency-phase detector control signal for the controlled oscillator. The output of the controlled oscillator, which is the output signal of the first heterodyne frequency, is connected with the control input of the first mixer. The output of the controlled frequency divider “N2”, which is the output signal of the second heterodyne frequency, is connected with the control input of the second mixer. The output from the monitor of the frequency divider “N3”, which the output signal of a clock frequency associated with the output clock output modules, as well as with the control input of the output of the Converter.

Control inputs managed frequency dividers are connected with the terminals of the module, designed for input signals, setting out their ratios in certain combinations. These combinations depend, in particular, from the selection of the frequency of the external reference signal, from the choice of the SRNS GLONASS or GPS, from the choice of the frequency band F1, F2, L1, L2.

So, for the case of signal transformation SRNS GPS L1 and L2 when the frequency of the external reference signal 10,23 MHz coefficients N1, N2, N3 are coupled N1=137, N2=10, N3=3. For the case of signal transformation SRNS GPS L1 and L2 when the frequency of the reference signal 10 MHz coefficients N1, N2, N3 are coupled N1=140, N2=10, N3=3. For the case of signal transformation SRNS GPS L1 band when the frequency of the reference signal 10 MHz coefficients N1, N2, N3 are coupled N1=140, N2=10, N3=7, or N1=140, N2=11, N3=8 (depending on the required accuracy). For the case of signal transformation SRNS GLONASS Fl range when the frequency of the reference signal 10 MHz coefficients N1, N2, N3 are coupled N1=143, N2=10, N3=5. For the case of signal transformation SRNS GLONASS frequency bands F1 and F2 with the frequency of the reference signal 10 MHz coefficients N1, N2, N3 is ustanavlivaetsya in combination N1=143, N2=10, N3=3. For the case of signal transformation SRNS GLONASS frequency band F1 with additional lettered frequencies, introduced in accordance with [16] - global Navigation Satellite System - GLONASS. The interface control document” / M, the Coordination scientific information center videoconferencing defense Ministry, 1995, the coefficients N1, N2, N3 are coupled N1=142, N2=10, N3=5.

Module prototype with attached relevant external filters forms in the receiver signal GPSr scheme of frequency conversion and subsequent analog-to-digital conversion of signals SRNS GLONASS signals SRNS GPS. The signal of the first heterodyne frequency determines the first intermediate frequency converted signals, the signal of the second heterodyne frequency determines the second intermediate frequency converted signals, and the clock signal frequency is the sampling frequency of analog-to-digital conversion.

Module prototype can be used in the receivers of SRNS GPS, receivers SRNS GLONASS, as well as in integrated receivers SRNS GLONASS and GPS. In the latter case, since the micro-module prototype does not provide the possibility of simultaneous (parallel) conversion of signals from both systems require, for example, the use of two micro modules - one of which is configured to signals SRNS GLONASS, while the other signals SRNS GPS.

The task, which is aimed by the invention, is expanding Arsenal of micromodules for frequency conversion of signals in the receivers of SRNS GLONASS and GPS through the creation of re-configurable (programmable) micro-module that enables simultaneous conversion of signals standard precision (“C/a” and “ST” codes) of both systems in any of the three specified cases, namely signals SRNS GPS and GLONASS frequency band L1/F1 lettered frequencies from minus 7 to 6, signals SRNS GPS and GLONASS frequency band L2/F2 with lettered frequencies from minus 7 to 6 and signals SRNS GPS and GLONASS frequency band L1/F1 lettered frequencies from minus 7 to 12, in specified conditions of application of the external reference signal with a fixed frequency of 5 MHz and 10 MHz, with the simultaneous formation of the signal clock frequency used in subsequent digital processing of the converted signals SRNS GPS and GLONASS.

The inventive module can be applied in integrated receivers SRNS GLONASS and GPS, for example of the type presented in [6], [7], in which for correlation processing of the converted frequency signals are multichannel digital correlator type [6, 4], [7, 3].

The essence of the invention lies is carried out in the following. The modules for frequency conversion of signals GPSr contains a group of channel elements of the first frequency conversion of signals, the group of elements of the first channel of the second frequency conversion signal and the element group generator of signals of clock and heterodyne frequencies. The group of channel elements of the first frequency conversion signal contains an input amplifier, a first mixer and amplifier of the first intermediate frequency, and the input of the input amplifier is connected to the input signal by the output module. The group of elements of the first channel of the second frequency conversion signal contains the second mixer and connected in series to the first amplifier of the second intermediate frequency and the first output Converter, and outputs the first output transducer associated with the first group of output signal terminals of the module, and the control input of the first amplifier of the second intermediate frequency associated with the first managing output module designed for supplying a signal to adjust the gain for this amplifier. The element group generator of signals of clock and heterodyne frequencies includes a controllable oscillator, a frequency-phase detector and the controlled frequency dividers “N1”, “N2” and “N3”, and the output of the controlled oscillator, which is the output of the first signal is heterodyne frequency, connected with the control input of the first mixer and the signal input of the controlled frequency divider “N2”, the output of which being the output signal of the second heterodyne frequency, is connected with the control input of the second mixer, the output of the controlled frequency divider “N3”, which is the output signal of a clock frequency associated with the output clock output module, and the output of the frequency-phase detector and the control input of the controlled oscillator connected with the terminals of the module, intended for connection, respectively, input and output filter signal locked loop frequency controlled generator.

The modules differs in that it additionally introduced the element group of the second channel of the second frequency conversion signal containing the third mixer, a reference input connected to the reference input of the second mixer, and connected in series with the second amplifier of the second intermediate frequency and the second output Converter, and outputs the second output transducer associated with the second group of output signal terminals of the module, and the control input of the second amplifier of the second intermediate frequency is related to the second managing output module designed for supplying a signal to adjust the gain for this amplifier. Thus the output of the input amplifier and ignaliny the input of the first mixer connected with the terminals of the module, intended for connection, respectively, the input and filter output signals SRNS GLONASS and GPS, the output of the first mixer is connected to the input of the first amplifier intermediate frequency amplifier output of the first intermediate frequency associated with the output module designed to connect the input filter of the first intermediate frequency signals SRNS GLONASS and the input filter of the first intermediate frequency signals SRNS GPS signal inputs of the second and third mixers are connected with the terminals of the module, intended for connection, respectively, of the filter output of the first intermediate frequency signals SRNS GLONASS and the filter output of the first intermediate frequency signals SRNS GPS, the output of the second mixer and the signal input of the first amplifier of the second intermediate frequency associated with the findings of the micro-module, intended for connection, respectively, input and output filter of the second intermediate frequency signals SRNS GLONASS, and the output of the third mixer and the signal input of the second amplifier of the second intermediate frequency associated with the findings of the micro-module, intended for connection, respectively, input and output filter of the second intermediate frequency signals SRNS GPS. In the shaper of signals of clock and heterodyne frequencies signal input of the controlled frequency divider n is N1”, where N=4, 8, 9, and the signal input of the controlled frequency divider “on N3, where N3=2, 4, connected across inputs of the frequency divider by 2 from the output of the controlled frequency divider “on N2, where N2=7, 8, the output of the controlled frequency divider “N1” is connected across the inputs of the frequency divider “by 11” with a signal input of the frequency-phase detector reference input frequency phase detector is connected with the input reference output module via the additionally introduced a controlled frequency divider “ N4, where N4=5, 10, serving for forming vnutripuzarnogo reference signal from an external reference signal. Control inputs managed frequency dividers “N1”, “N2”, “N3” and “N4” are connected through the interface with a group of control outputs of modules designed to supply signals that set their ratios in predetermined combinations, and the combination of the ratios N1=8, N2=8, N3=2 corresponds to the case of converting signals SRNS GPS and GLONASS any of the two frequency bands L1/F1 and L2/F2 with lettered frequencies from minus 7 to 6 at a frequency vnutripuzarnogo reference signal of 1 MHz, a combination of factors dividing N1=4, N2=8, N3=2 corresponds to the case of converting signals SRNS GPS and GLONASS any of the two frequency bands L1/F1 and L2/F2 with lettered frequencies mine is from 7 to 6 at a frequency vnutripuzarnogo reference signal 2 MHz, and the combination of the ratios N1=9, N2=7, N3=4 corresponds to the case of converting signals SRNS GPS and GLONASS frequency band L1/F1 lettered frequencies from minus 7 to 12 at a frequency vnutripuzarnogo reference signal of 1 MHz, while the division factor N4=10 corresponds to the case of forming vnutripuzarnogo reference signal with a frequency of 1 MHz external reference signal with a frequency of 10 MHz, and the division factor N4=5 - cases forming vnutripuzarnogo reference signal with a frequency of 1 MHz and a frequency of 2 MHz external reference signal with a frequency of 5 MHz and with a frequency of 10 MHz, respectively.

The essence of the invention, the possibility of its implementation and industrial use are illustrated by the drawings and frequency diagrams presented in figures 1 to 4, where:

figure 1 shows the structural diagram of the proposed module connected to the external elements.

figure 2 is a frequency diagram illustrating the conversion of signals SRNS GPS and GLONASS frequency band L1/F1 lettered frequencies from minus 7 to 6 (2A - frequency band of the converted signals, 2B - frequency band signals after the first frequency conversion, 2B - frequency band signal after the second frequency conversion);

figure 3 is a frequency diagram illustrating the conversion of signals SRNS GPS and GLONASS h the frequency range L2/F2 with lettered frequencies from minus 7 to 6 (3A - the frequency band of the converted signal, 3b - frequency band signals after the first frequency conversion, 3b - frequency band signal after the second frequency conversion);

figure 4 is a frequency diagram illustrating the conversion of signals SRNS GPS and GLONASS frequency band L1/F1 lettered frequencies from minus 7 to 12 (4A - frequency band of the converted signals, 4B - frequency band signals after the first frequency conversion, 4B - frequency band signal after the second frequency conversion).

Declare module, see figure 1, contains a group 1 elements of the channel of the first frequency conversion of signals, the group 2 elements of the first channel of the second frequency conversion of signals, the group 3 elements of the second channel of the second frequency conversion signal, and group 4 elements shaper signals of clock and heterodyne frequencies.

Group 1 elements of the channel of the first frequency conversion signal (channel joint transform signals SRNS GLONASS and GPS) contains the input amplifier 5 and connected in series to the first mixer 6 and the amplifier 7, the first intermediate frequency. The input of the input amplifier 5 is connected with the input signal output 8 modules, designed to connect the input of the receiving circuit of the receiver signals GPSr, consisting, for example, from the reception of the second antenna 9 and a bandpass filter 10, performed, for example, in the form of filter surface acoustic wave (saw). The output of the input amplifier 5 and the signal input of the first mixer 6 connected to pins 11 and 12 of the module, intended for connection, respectively, the input and output of the filter 13 signals SRNS GLONASS and GPS, the bandwidth of which corresponds to the frequency range of the received signals. The filter 13 signals SRNS GLONASS and GPS can be made in the form of filter on surfactants. The output of the amplifier 7, the first intermediate frequency associated with the output module 14, intended to connect the input of the filter 15, the first intermediate frequency signals SRNS GLONASS and the input of the filter 16 of the first intermediate frequency signals SRNS GPS.

Group 2 elements of the first channel of the second frequency conversion signal channel of the second frequency conversion signal SRNS GLONASS) contains the second mixer 17 and connected in series to the first amplifier 18 and the second intermediate frequency and the first output transducer 19. The first amplifier 18 and the second intermediate frequency is made with adjustable gain, its control input connected with the first managing output 20 modules designed for supplying a signal to adjust the gain for this amplifier. The outputs of the first output of the Converter 19 is connected to the first group 21 of the output is Ignalina conclusions of modules - findings from which are removed the converted output signals SRNS GLONASS. The signal input of the second mixer 17 is connected with the output 22 of the module designed to connect the output of the filter 15, the first intermediate frequency signals SRNS GLONASS. The output of the second mixer 17 and the signal input of the first amplifier 18 and the second intermediate frequency are connected, respectively, with pins 23 and 24 modules, intended for connection, respectively, the input and output of the filter 25 of the second intermediate frequency signals SRNS GLONASS.

Group 3 elements of the second channel of the second frequency conversion signal channel of the second frequency conversion signal SRNS GPS) includes a third mixer 26, a reference input connected to the reference input of the second mixer 17, and connected in series with the second amplifier 27 of the second intermediate frequency and the second output transducer 28. The second amplifier 27 of the second intermediate frequency is made with adjustable gain, its control input connected with the second Manager output 29 of modules designed for supplying a signal to adjust the gain for this amplifier. The outputs of the second output of inverter 28 is connected with the second group of 30 of the output signal of the findings of the micro-module - findings from which are removed the converted output signals GPSr PS. Signal input of the third mixer 26 is connected with the output 31 of modules designed to connect the output of the filter 16 of the first intermediate frequency signals SRNS GPS. The output of the third mixer 26 and the signal input of the second amplifier 27 of the second intermediate frequency are connected, respectively, with pins 32 and 33 of the module, intended for connection, respectively, the input and output of the filter 34 of the second intermediate frequency signals SRNS GPS.

Output converters 19 and 28 contain analog-to-digital converters, made, for example, in case of double-bit quantizer level, which allow you to “digitize” output signals of the module and to give them in the case of double-bit codes. This provides the ability to run modules with digital correlators, in which there are no corresponding analog-to-digital converters (type correlators described in [6, 4], [7, 3]). In more complex cases, the output converters 19, 28 may contain in addition to these analog-to-digital converters linear drivers (translators signals)that provides the ability to output transducers 19, 28 in two modes - mode analog-to-digital conversion of signals or broadcast signals. Mode output converters 19, 28 this text is tea is affected by the switching signals, arriving at their control inputs with appropriate switching of the outputs of the module (figure 1 control inputs output converters 19, 28 and the switching terminals of the modules belonging to the occasion, not shown).

Group 4 elements shaper signals of clock and heterodyne frequencies includes a controllable oscillator 35, a frequency-phase detector 36, controlled frequency divider 37 “to N1, where N1=4, 8, 9 controlled frequency divider 38 on N2, where N2=7, 8, controlled frequency divider 39 “on N3, where N3=2, 4, and introduced additional frequency divider 40 “2”, the frequency divider 41 “11” and the controlled frequency divider 42 “N4”, where N4=5, 10.

The output of the controlled oscillator 35, which is the output signal of the first heterodyne frequency F1, connected with the control input of the first mixer 6 and the signal input of the controlled frequency divider 38 “N2”. The output of the controlled frequency divider 38 “N2”, which is the output signal of the second heterodyne frequency F2, connected with the control input of the second mixer 17 and the reference input of the third mixer 26. In addition, the output of the controlled frequency divider 38 “N2” is connected through a frequency divider 40 “to 2” with the signal input of the controlled frequency divider 37 “N1” and the signal input of the controlled frequency divider 39 “N3”. The output of the controlled divider chastity “N3”, which is the signal output clock frequency Fň, associated with the output clock output 43 of the module. The output of the controlled frequency divider 37 “N1” is connected through a frequency divider 41 “11” with the signal input of the frequency-phase detector 36. Reference input frequency phase detector 36 is connected through a controlled frequency divider 42 “N4” with the input reference output 44 of the module, intended for the supply of the external reference signal with a given frequency Fo (5 MHz or 10 MHz). Managed frequency divider 42 “N4” is used for formation of the external reference signal vnutripuzarnogo reference signal with a frequency Fcp (1 MHz or 2 MHz), which determines the frequency comparison frequency of the phase detector 36. The output of the frequency-phase detector 36 and the control input of the controlled oscillator 35 are connected with the pins 45 and 46 of the module, intended for connection, respectively, the input and output of filter 47 signal locked loop frequency controlled oscillator 35, which serves for the formation of the output signal of the frequency-phase detector 36 of the control signal for the controlled oscillator 35.

The control inputs of the controllable frequency divider 37 “N1”, 38 “N2”, 39 “N3” and 42 “N4” are connected through the interface 48 group 49 control outputs of modules designed to supply signals ustanavlivaushee is their ratios N1, N2, N3, N4 in certain combinations, depending on frequency bands converted signals (figa, 4A), the selected frequency comparison Fcp (1 MHz or 2 MHz) and a given frequency Fo (5 MHz or 10 MHz external reference signal.

Thus, the combination of the ratios N1=8, N2=8, N3=2 corresponds to the case of converting signals SRNS GPS and GLONASS any of the two frequency bands L1/F1 and L2/F2 with lettered frequencies from minus 7 to 6 (figa,) at frequency vnutripuzarnogo reference signal 1 MHz Fcp=1 MHz).

The combination of the ratios N1=4, N2=8, N3=2 corresponds to the case of converting signals SRNS GPS and GLONASS any of the two frequency bands L1/F1 and L2/F2 with lettered frequencies from minus 7 to 6 (figa,) at frequency vnutripuzarnogo reference signal 2 MHz Fcp=2 MHz).

The combination of the ratios N1=9, N2=7, N3=4 corresponds to the case of converting signals SRNS GPS and GLONASS frequency band L1/F1 lettered frequencies from minus 7 to 12 (figa) at frequency vnutripuzarnogo reference signal 1 MHz Fcp=1 MHz).

Thus the division factor N4=10 corresponds to the case of forming vnutripuzarnogo reference signal with a frequency of 1 MHz external reference signal with a frequency of 10 MHz, and the division factor N4=5 - cases forming vnutripuzarnogo reference signal with a frequency of 1 MHz and a frequency of 2 MHz external reference signal with often the th 5 MHz and 10 MHz respectively.

The inventive module is implemented as a specialized large integrated circuits (VLSI), in the standard case, for example, type “QFN” (Quad Flat No-lead). This type of housing has a rectangular plastic body with conclusions for each of the four sides, which do not extend beyond the body of the casing and have a length of about 0.4 mm and pitch of 0.5 mm, the Inductance of the findings is of the order of 0.9 NH, the inductance between adjacent pins - 0.3 NH, the resistance of the output is of the order of 0.04 Ohms. The crystal is manufactured, for example, technology HW” design rule of 0.6 μm. Crystallochemical enclosed inside the housing and has an open bottom surface, which helps to ensure good electrical and thermal contact with the circuit Board of the receiver signals GPSr, which installs the module.

Installing the module on the PCB of the receiver signal SNS is carried out by surface mount technology. When installed on a circuit Board module connects with filters 10, 13, 15, 16, 25, 34, 47, characteristics which correspond to the frequency converted signals, as well as with conductors, which is supplied to the module control signals and eat with the module clock signal frequency and the converted output signals SRNS GPS and GLONASS. Mounted on the printed circuit Board m is tramadol subjected to initial programming, which is to install the above combinations of ratios N1, N2, N3, N4 in accordance with the specified frequency range converted signals selected by the frequency comparison Fcp (1 MHz or 2 MHz) and the frequency Fo (5 MHz or 10 MHz external reference signal generated in the receiver signal SNS. The initial programming is done by filing the appropriate control signals (single command) on a group of 49 control outputs of the module. Configured in this manner on certain signals of the modules in the structure of the signal receiver GPSr provides their transformation into the frequency range that meets the conditions of the subsequent digital processing, with the simultaneous formation of the signal clock frequency required for this digital processing

The operation of the module in the process of converting signals in the receiver signal SNS is as follows.

On the input reference output module 44 receives generated in the receiver signal GPSr reference signal with a given frequency Fo (5 MHz or 10 MHz). In this module the reference signal at the signal input of the controlled frequency divider 42 “N4”, the output of which is formed vnutrimatocny reference signal with a frequency Fcp=Fo:N4. Frequency Fcp is the frequency comparison for frequency-phase det is ktora 36. The frequency Fcp is 1 MHz or 2 MHz depending on the values of the reference frequency Fo and selected division factor N4, namely at Fo=10 MHz and N4=10 frequency value comparison Fcp=1 MHz; Fo=5 MHz and N4=5 the value of the frequency comparison Fcp=1 MHz, and at Fo=10 MHz and N4=5 the value of the frequency comparison Fcp=2 MHz.

From the output of the controlled frequency divider 42 “N4” vnutrimatocny reference signal with a frequency Fcp is fed to the reference input of the frequency-phase detector 36. Frequency-phase detector 36 is part of the ring frequency-phase-locked loop frequency controlled generator 35, and performs a function of the comparison element. The ring frequency-phase-locked loop frequency controlled oscillator 35 is formed connected to each other in a controlled generator 35, controlled frequency divider 38 “N2”, the frequency divider 40 “2”, the controlled frequency divider 37 “N1”, the frequency divider 41 “11”, the frequency-phase detector 36 and the external filter 47 signal locked loop frequency controlled oscillator 35, which serves for the formation of the output signal of the frequency-phase detector 36 of the control signal for the controlled oscillator 35. Under the action of the control signal generated by the ring-locked loop, the frequency control F output signal of the controlled oscillator 35 under frequency CPA is in Fcp in accordance with the expression F:N2:2:N1:11=Fcp=Fo:N4.

The output signal of the controlled oscillator 35 is used as a signal of the first heterodyne frequency F1, i.e. F=F1=(Fo:N4)×N2×2×N1×11 and by dividing in a controlled frequency divider 38 “N2” is formed by the signal of the second heterodyne frequency F2, i.e. F2=F:N2=F1:N2. From the signal of the second heterodyne frequency by successive division in the frequency divider 40 “to 2” and in a controlled frequency divider 39 “N3”, a signal is generated clock frequency Fň, i.e. Fň=F2:2:N3. This ensures consistency of clock and heterodyne signals.

The signal of the first heterodyne frequency F1 is fed to the reference input of the first mixer 6, the signal of the second heterodyne frequency F2 is fed to the reference input of the second 17 and third 26 mixers, clock Fň is supplied to the output clock, the output 43 of the module.

In the first two considered cases of conversion signals SRNS GPS and GLONASS frequency bands L1/F1 and L2/F2 with lettered frequencies from minus 7 to 6 (figure 2, 3) the value of the first heterodyne frequency is F1=F=1408 MHz, the value of the second heterodyne frequency is F2=F1:N2=176 MHz and the clock frequency is Fň=F2:2:N3=44 MHz. The specified values of clock and heterodyne frequencies are provided by the initial configuration of the modules data signals, in accordance with h the m sets the combination of the ratios N1=8, N2=8, N3=2 when the frequency comparison Fcp=1 MHz, or a combination of the ratios N1=4, N2=8, N3=2 when the frequency comparison Fcp=2 MHz.

In the third case conversion signals SRNS GPS and GLONASS frequency band L1/F1 lettered frequencies from minus 7 to 12 (figure 4) the value of the first heterodyne frequency is F1=F=1386 MHz, the value of the second heterodyne frequency is F2=F1:N2=198 MHz and the clock frequency is Fň=F2:2:N3=24,75 MHz. The specified values of clock and heterodyne frequencies are provided by the initial configuration of the module in this mode, in accordance with which a combination of the ratios N1=9, N2=7, N3=4 when the frequency comparison Fcp=1 MHz.

Signals SRNS GPS and GLONASS accepted by the antenna 9 and bandpass filtered by filter 10, are received on the input signal, the output 8 of the module. In the first case case conversion signals SRNS GPS and GLONASS frequency band L1/F1 lettered frequencies from minus 7 to 6 - frequency bands of these signals occupy, respectively, the bandwidth 1571,328÷1579,512 MHz and 1596,0185÷1606,294 MHz (figa); in the second case - the case of the conversion of signals SRNS GPS and GLONASS frequency band L2/F2 with lettered frequencies from minus 7 to 6 - frequency bands of these signals occupy, respectively, the bandwidth 1223,508÷1231,692 the Hz and 1240,8935÷ 1249,794 MHz (figa); and in the third case - the case of the conversion of GPS and GLONASS frequency band L1/F1 lettered frequencies from minus 7 to 12 frequency bands of these signals occupy, respectively, the bandwidth 1571,328÷1579,512 MHz and 1596,5295÷1610,794 MHz (figa).

From the signal output 8 modules convert the signals fed to the input of the input amplifier 5, where they are amplified. Amplified signals out of the module via the output 11 and is fed to the input of the filter 13 signals SRNS GLONASS and GPS with the appropriate bandwidth. From the output of the filter 13, the filtered signals SRNS GLONASS and GPS return to the module via its output 12 and fed to the signal input of the first mixer 6, the reference input is in the first and second of the considered cases, the signal of the first heterodyne frequency F1=1408 MHz (figa For), and in the third case F1=1386 MHz (figa). The first frequency conversion signals SRNS GLONASS and GPS are transferred to the first intermediate frequency. Further, these signals are amplified in amplifier 7, the first intermediate frequency and sent to the output module 14, and with him - to the input of the filter 15, the first intermediate frequency signals SRNS GLONASS and to the input of the filter 16 of the first intermediate frequency signals SRNS GPS. The filters 15 and 16 carry out the separation of C the signals on two channels - channel conversion signal SRNS GLONASS and channel conversion signal SRNS GPS. In the first case, the frequency bands of the signals of the SRNS GPS and GLONASS after the first frequency conversion are, respectively, 163,328÷171,512 MHz and 188,0185÷198,294 MHz (figb), in the second case, the frequency band signals SRNS GLONASS and GPS after the first frequency conversion are, respectively, 158,206÷167,1065 MHz and 176,308÷184,492 MHz (figb), and in the third case, the frequency bands of the signals of the SRNS GPS and GLONASS after the first frequency conversion are, respectively, 185,328÷193,512 MHz and 210,0185÷224,794 MHz (figb).

From the output of the filter 15 signals SRNS GLONASS first intermediate frequency received at the output 22 of the module, and from there to the signal input of the second mixer 17. From the output of the filter 16 signals SRNS GPS first intermediate frequency received at the output 31 of the module, and with him - at the signal input of the third mixer 26. On the reference inputs of the mixers 17 and 26 in the first and second cases, the signal of the second heterodyne frequency F2=176 MHz (figb, 3b), while in the third case - F2=198 MHz (figb). In all three cases, the value of the second heterodyne frequency F2 is located between the upper and lower boundaries of the frequency ranges of signals SRNS GLONASS and GPS after the first frequency conversion. In the result of the second frequency conversion signal which crystals of GLONASS and GPS are transferred to their second intermediate frequency. Further, these signals through the conclusions of 23 and 32 of the module are received, respectively, to the inputs of filters 25 and 34 of the second intermediate frequency SRNS GLONASS and GPS. Using filters 25 and 34 filters the signals after the second frequency conversion. In the first case, the frequency bands of the signals of the SRNS GPS and GLONASS after the second frequency conversion are, respectively, 4,488÷12,672 MHz and 12,0185÷22,294 MHz (pigv), in the second case, the frequency bands of the signals of the SRNS GPS and GLONASS after the second frequency conversion are, respectively, 0,308÷8,492 MHz and 8,8935÷17,794 MHz (pigv), and in the third case, the frequency bands of the signals of the SRNS GPS and GLONASS after the second frequency conversion are, respectively, 4,488÷12,672 MHz and 12,0185÷26,794 MHz (pigv). From the output of the filter 25 signals SRNS GLONASS second intermediate frequency is returned to the module via its output 24 and fed to the signal input of the first amplifier 18 and the second intermediate frequency, and the output of filter 34 signals SRNS GPS second intermediate frequency is returned to the module via its output 33 and fed to the signal input of the second amplifier 27 of the second intermediate frequency. The amplifiers 18 and 27 signals SRNS GLONASS and GPS second intermediate frequencies are amplified to a predetermined level defined by the signals of the gain coming in the sending inputs of these amplifiers pin 20 and 29 of the module. The signals of the gain control amplifier 18, 27 are formed in the receiver signal GPSr in the digital processing unit. Gain control amplifiers 18, 27 necessary to ensure a certain level of signals on the signal inputs of the output converters 19, 28, which form on their outputs output signals of the module is converted to the specified type signals SRNS GLONASS and GPS. With outputs output converters 19, 28 output signals of the modules arrive on the first 21 and 30 second groups of output signal terminals of the module.

The output signals of the modules undergo further transformation in the multichannel digital correlator and digital processing (digital navigation processor) (figure 1-4 not shown) for receiving navigation information and/or time information. The digital correlator and digital navigation processor is under the action of retiring output clock output 43 of the module signal clock frequency Fň (in the first and second cases Fň=44 MHz, in the third case Fň=24,75 MHz), which allows digital processing of the output signals of the modules without loss of information.

Thus, the discussed shows that the claimed invention is technically feasible, industrial realizable and resh is no task for expanding Arsenal of micromodules for frequency conversion of signals in the receivers of SRNS GLONASS and GPS through the creation of programmable modules, enables simultaneous conversion of standard signals, the accuracy of both systems in any of the three specified cases, namely signals SRNS GPS and GLONASS frequency band L1/F1 lettered frequencies from minus 7 to 6, signals SRNS GPS and GLONASS frequency band L2/F2 with lettered frequencies from minus 7 to 6, signals SRNS GPS and GLONASS frequency band L1/F1 lettered frequencies from minus 7 to 12, in the conditions of the reference signal with a fixed frequency of 5 MHz or 10 MHz, with the simultaneous formation of the signal clock frequency used in the subsequent digital signal processing in multichannel digital correlator and digital navigation processor.

Sources of information

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2. Network satellite navigation system/ Usershave, Ali, Nevanac etc.// M, Radio and communications, 1993.

3. EP No. 0523938 (A1), N 03 D 7/16, G 01 S 5/14, publ. 20.01.1993.

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5. US No. 5832375, H 04 B 1/26, publ. 03.11.1998.

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9. RU # 2182408 (C2), H 05 K 1/00, 1/11, 1/14, 3/46, publ. 10.05.2002.

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11. US No. 6437991 (B1), H 0 To 1/14, publ. 20.08.2002.

12. US No. 5148452, H 03 D 3/02, H 04 L 27/06, publ. 15.09.1992.

13. US No. 5175557, G 01 S 5/02, N 04 7/185, N 04 15/00, publ. 29.12.1992.

14. US No. 5192957, N 04 7/185, G 01 S 5/02, publ. 09.03.1993.

15. US No. 6345177 (B1), H 04 1/16, 1/04, 1/26, 1/06, 1/10, publ. 05.02.2002.

16. Global Navigation Satellite System - GLONASS. The interface control document / M, the Coordination scientific information center videoconferencing defense Ministry, 1995.

The modules for frequency conversion of signals of satellite navigation systems (SNS), containing the group of elements of the channel of the first frequency conversion of signals, the group of elements of the first channel of the second frequency conversion signal and the element group generator of signals of clock and heterodyne frequencies, the group of channel elements of the first frequency conversion signal contains an input amplifier, whose input is connected to the input signal by the output module, the first mixer and the amplifier of the first intermediate frequency, the element group of the first channel of the second frequency conversion signal contains the second mixer and connected in series to the first amplifier of the second intermediate frequency and the first output Converter, and outputs the first output transducer associated with the first group of output signal terminals of the module, and the control input of the first amplifier second Ave the intermediate frequency associated with the first managing output module, intended for supplying a signal to adjust the gain for this amplifier, the element group generator of signals of clock and heterodyne frequencies includes a controllable oscillator, a frequency-phase detector and the controlled frequency dividers "N1', "N2" and "N3", and the output of the controlled oscillator, which is the output signal of the first heterodyne frequency, is connected with the control input of the first mixer and the signal input of the controlled frequency divider "N2", the output of which being the output signal of the second heterodyne frequency, is connected with the control input of the second mixer, the output of the controlled frequency divider "N3", which the output signal of a clock frequency associated with the output clock output module, and the output of the frequency-phase detector and the control input of the controlled oscillator connected with the terminals of the module, intended for connection respectively to the input and filter output signal locked loop frequency of the controlled oscillator, characterized in that it additionally introduced the element group of the second channel of the second frequency conversion signal containing the third mixer, a reference input connected to the reference input of the second mixer, and connected in series with the second amplifier of the second intermediate frequency and the second output inverter, and the output is s second output transducer associated with the second group of output signal conclusions the micro-module, and the control input of the second amplifier of the second intermediate frequency is related to the second managing output module designed for supplying a signal to adjust the gain for this amplifier, the output of the input amplifier and the signal input of the first mixer connected with the terminals of the module, intended for connection respectively to the input and filter output signals SRNS GLONASS and GPS, the output of the first mixer is connected to the input of the first amplifier intermediate frequency amplifier output of the first intermediate frequency associated with the output module designed to connect the input filter of the first intermediate frequency signals SRNS GLONASS and the input filter of the first intermediate frequency signals SRNS GPS signal inputs of the second and third mixers are connected with the terminals of the module, intended for connection respectively to the output of the filter, the first intermediate frequency signals SRNS GLONASS and the filter output of the first intermediate frequency signals SRNS GPS, the output of the second mixer and the signal input of the first amplifier of the second intermediate frequency associated with the findings of the micro-module, intended for connection respectively to the input and output filter of the second intermediate frequency signals SRNS GLONASS, and the output of the third mixer and the signal input of the second amplifier of the second prom is mediate frequency associated with the findings of the micro-module, intended for connection respectively to the input and output filter of the second intermediate frequency signals SRNS GPS, the driver signals of clock and heterodyne frequencies signal input of the controlled frequency divider "N1", where N=4, 8, 9, and the signal input of the controlled frequency divider "on N3, where N3=2, 4, connected across inputs of the frequency divider by 2 from the output of the controlled frequency divider "on N2, where N2=7, 8, the output of the controlled frequency divider "N1" is connected via the additionally introduced the frequency divider "by 11" with a signal input of the frequency-phase detector reference input frequency phase detector is connected with the input reference output module via the additionally introduced a controlled frequency divider "on N4, where N4 = 5, 10, serving for forming vnutripuzarnogo reference signal from an external reference signal, the control inputs of controllable frequency dividers "N1", "N2", "N3" and "N4" are connected through the interface with a group of control outputs of modules designed to supply signals that set their ratios specified in combinations, and the combination of the ratios N1=8, N2=8, N3=2 corresponds to the case of converting signals SRNS GPS and GLONASS any of the two frequency bands L1/F1 and L2/F2 with lettered frequencies from minus 7 to 6 when h is the frequency of vnutripuzarnogo reference signal of 1 MHz, the combination of the ratios N1=4, N2=8, N3=2 corresponds to the case of converting signals SRNS GPS and GLONASS any of the two frequency bands L1/F1 and L2/F2 with lettered frequencies from minus 7 to 6 at a frequency vnutripuzarnogo reference signal 2 MHz, and the combination of the ratios N1=9, N2=7, N3=4 corresponds to the case of converting signals SRNS GPS and GLONASS frequency band L1/F1 lettered frequencies from minus 7 to 12 at a frequency vnutripuzarnogo reference signal of 1 MHz, while the division factor N4=10 corresponds to the case of forming vnutripuzarnogo reference signal with a frequency of 1 MHz external reference signal with a frequency of 10 MHz, and the division factor N4=5 - cases forming vnutripuzarnogo reference signal with a frequency of 1 MHz and a frequency of 2 MHz external reference signal with a frequency of 5 MHz and 10 MHz respectively.



 

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2 dwg, 1 tbl

The invention relates to receivers, which provide a measure of the information of the location of the satellites and are used in the detection system (GPS)location

The invention relates to the field of satellite navigation and can be used to determine the state vector (coordinates, speed and time) of users on the signals of two satellite navigation systems (SNS) GLONASS (Russia) and GPS NAVSTAR (USA)

The invention relates to the field of satellite navigation and can be used in tracts of primary information processing voltage signals of global navigation satellite systems GPS NAVSTAR (USA) and GLONASS (Russia)

The invention relates to a method of Autonomous lowering the limits of detection and tracking of bearing taken on orbit receiver equipped with orbital navigation system, inside or outside the specified receiver, the latter has at least one ring phase-locked loop

The invention relates to radio engineering, in particular, to a radionavigation systems determine the location of objects

The invention relates to radar systems and can be used in cellular communication systems to determine the location of a mobile station (MS)

FIELD: the invention refers to radio technique means of determination of a direction, location, measuring of distance and speed with using of spaced antennas and measuring of a phase shift or time lag of taking from them signals.

SUBSTANCE: the proposed mode of determination of coordinates of an unknown transmitter is based on the transmitter's emitting of a tracing signal to the satellite, on receiving of signals of an unknown transmitter and legimite transmitters which coordinates are known, on forming a file of clusters, on selection of the best clusters out of which virtual bases are formed for calculating coordinates of legimite and unknown transmitters according to the coordinates of legimite transmitters and the results of calculation of their coordinates one can calculate mistakes of measuring which are taken into account at calculating the coordinates of the unknown transmitter.

EFFECT: increases accuracy of determination of coordinates of an unknown transmitter in the system of a satellite communication with a relay station on a geostationary satellite.

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