System for real-time location of mobile objects using synchronous fixed communication network

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

 

The proposed invention relates to communication technology and can be used to determine the location of moving objects.

A well-known system and method for determining the location of a mobile subscriber of the cellular network connection (patent for invention BY No. 12647, CL IPC (2006) G01S 3/02)that includes a mobile subscriber, the base station of the cellular communication network, the Central switch, geographic information system, a sub-process synchronization via satellite systems. In this system the location of the subscriber devices is determined by the coordinates of the base stations in the coverage area which is a subscriber device to account for the spatial configuration of the radiation patterns of the antennas of the base stations and the power level received from these base stations signals from subscriber units.

This system does not provide sufficiently accurate positioning of the object, but only defines the area in which the object resides. The accuracy of the system depends on the configuration of the terrain, weather conditions that does not allow her to work in real time.

Known selection system navigation solution used to establish the location of the device in the wireless communications system (patent RU No. 2362213, CL IPC (2006) G08G 1/123), including the first set of data octopole the attachment of the remote device based on network measurements, the second set of location data of the remote device based on measurements of the satellite global positioning system and the choice between the first and second data set.

The disadvantage of this technical solution is the current error of each measurement and the relativity assessment selection that does not allow for precise positioning of the object.

A known system for determining the position of moving objects (for a utility model patent RU No. 23030, CL IPC NV 7/26, G01S 5/00), including artificial Earth satellites, control stations, receiving stations (base station) and mobile objects.

A disadvantage of the known technical solution is that the connection of the receiving stations between itself and the control station by means of the Internet, increases the travel time information, and sometimes to a partial loss of information between the receiving stations, and between the receiving and dispatching station due to the occurrence of collisions in the network, which increases the accuracy of determining the location of a moving object.

A common shortcoming presents analogues is a sharp increase in errors in the calculation of the position of moving objects by increasing the speed of motion of moving objects.

Most nl is scoi system the same destination to declared on a set of attributes, is the system for determining the position of moving objects in real time (patent RU No. 2444705, CL IPC G01C 21/24)containing artificial Earth satellites of the global navigation satellite system installed stationary in the reference point with known geographic coordinates and containing geographic information system (GIS) control station, base station, mobile objects that are installed on the movable object and a control station associated with artificial Earth satellites receivers navigation satellite systems, fiber-optic communication line that provides connections between base stations and between at least one base station and the control station.

The disadvantage of this technical solution is the narrowness of the use of this system, since its implementation requires a WIMAX network. Also there is no explanation of how the base station are identified dispatcher station.

An object of the invention is to create a universal system for identifying the location of the movable object on the basis of any navigation system satellites with any system broadband wireless access (SPRD), such as WiFi, WCDMA, HSDPA, HSPA+, LTE, and a network of synchronous fixed-line communications, as well as the clarification of the process of calculating the coordinates of a moving object base stations.

The technical result consists in increasing the accuracy of the positioning of moving objects in real time and increase the functionality of the system.

This technical result is achieved in that in a system for determining the position of moving objects, containing artificial Earth satellites of the global navigation satellite system installed stationary in the reference point with known geographic coordinates and containing geographic information system (GIS) control station, base station, mobile objects that are installed on mobile objects and dispatching station and associated with artificial Earth satellites receivers navigation satellite systems, fiber-optic communication line that provides connections between base stations and between at least one base station and control station, entered on moving objects, and the base stations of the telecommunication equipment wireless broadband services, providing connection between the mobile and base stations via broadband radio, in addition to dispatching station has equipment for time synchronization and navigation equipment of artificial Earth satellites with telecommunication the m equipment broadband wireless access and a processing unit with software, carrying out the joint operation of navigation equipment, satellites and telecommunications equipment in a broadband wireless access, also the dispatching station and each of the base stations installed network equipment synchronous fixed-line communication for work on fiber-optic communication lines, each of the base stations are stationary in the reference points with known coordinates and has its own identification number. This identification number of each base station is the IP address of the base station. This network equipment is synchronous fixed-line communications is a technology equipment synchronous digital hierarchy SDH (Synchronous Digital Hierarchy), or equipment technologies optical transport network OTN (Optical Transport Network), or any other similar equipment.

The proposed invention is explained using the flowchart shown in figure 1.

In figure 1 the following notation:

- 1-N - artificial Earth satellites of the global navigation satellite system (where N=1, 2, 3, ...);

- 2 - dispatching station;

- 3-M - base station (where M=1, 2, 3, ...);

- 4-To - moving objects, where To=1, 2, 3, ...);

- 5-To - receiver signals of the navigation satellite system installed on moving objects;

- 6 - receiver C the signals of the navigation satellite system, mounted on the control station;

- 7-To - telecommunications terminal equipment SPRD installed on moving objects;

- 8-M - telecommuniction network equipment SPRD installed at the base stations;

- 9 - network equipment synchronous fixed line installed on the control station;

- 10-M - equipment network synchronous fixed line installed at the base stations;

- 11 - geographic information system GIS;

- 12 - equipment for time synchronization and navigation equipment of artificial Earth satellites with network equipment SPRD;

- 13 - unit information processing software.

The inventive system to determine the location of moving objects includes artificial Earth satellites of the global navigation satellite system 1-N mounted stationary in the reference point with known geographic coordinates dispatcher station 2, base station 3, the mobile objects 4, mounted on the movable object 4 To and associated with artificial Earth satellites 1-N receivers 5-K navigation satellite system installed on the control station 2 and associated with artificial Earth satellites 1-N signal receiver 6 navigation satellite system installed on the moveable the x objects 4-To telecommunications terminal equipment wireless broadband services 7, installed at the base stations 3-M telecommunications equipment broadband wireless access 8th conducting connection between the mobile and base stations via broadband radio, in addition, the dispatching station 2 is installed geographic information system (GIS) 11 and the equipment for time synchronization 12 of the navigation equipment of artificial Earth satellites 1-N, Telecom equipment broadband wireless access mobile objects and base stations, and also include a processing unit 13 with software that enables collaboration and navigation equipment of artificial Earth satellites 1-N and telecommunications equipment in a broadband wireless access, also the dispatching station 2 installed network equipment synchronous fixed line 9, and on each of the base stations 3-M network equipment synchronous fixed-line connection 10-M long, for connection between base stations and between at least one base station and the control station through a fiber-optic communication line, each of the base stations 3-M stationary in the reference points with known coordinates and has its own identification number. Thus the identification of each of the base is x stations 3 dispatcher station 2 based on the IP address of the base station. This network equipment is synchronous fixed-line communications is a technology equipment synchronous digital hierarchy SDH, or equipment technologies optical transport network, OTN, or any other similar equipment.

The claimed system works as follows.

Each of the receivers 5-K navigation satellite system mounted on the respective movable object 4 and is located in the coverage area of the satellites 1-N, receives from the satellites 1-N global navigation satellite system navigation radio signals and, using the known radio methods, computes its own geographic coordinates. These coordinates are transmitted using telecommunications subscriber equipment network SPRD 7 are mounted on the movable object 4 To the telecommunications network equipment SPRD 8th nearest to the moving object from the base stations 3 through wireless broadband services. Next, the resulting coordinates are transmitted through the network equipment synchronous fixed-line connection 10-Meters installed at the base stations to the receiving network equipment synchronous fixed line 9 installed on the control station 2 via a fibre-optic line, and then the processing unit 13 is dispetcherskoy station 2 to display the location of the movable object on the maps geographic information systems GIS 11. Identification of the dispatcher station of the base station which received the message is done by the IP address of the base station.

Simultaneously, the signal receiver 6 navigation satellite system installed on the control station 2 with known coordinates, the resulting precision surveying, receives navigation signals from artificial satellites of the earth 1. the processing Unit 13 and control station 2, using the method of differential corrections, determines the measurement coordinates at each point in time and form amendments coordinates for the correction of the coordinates of moving objects 4-K.

According to the Russian system of differential correction and monitoring (sdcm) (www.sdcm.ru currently errors of navigation definitions are: GLONASS longitude and latitude is from 4.00 to 7.00 m (depending on point of reception) when using 8-9 satellites; GPS longitude and latitude from 1.40 to 4.00 m (Mendeleevo error ranges from 24 km to 30 km) when using 10-11 satellites. Objective to increase the accuracy of determination of coordinates is solved by joint navigation satellite systems, broadband radio access network and a synchronous network by fixed connection.

Improving the accuracy of determination of coordinates movably what about the object is achieved by the measurement error that occurs when the calculation is adjusted by means of method triangulation network SPRD using at least three nearest to the object base stations 3) Next to the object base station 3-M measure time and speed signal to each of the moving object 4-through the telecommunication network equipment SPRD 8th, installed at the base stations 3 and telecommunication subscriber equipment SPRD 7-To mobile objects 4 K. the results Obtained with its PIN stations broadcast on the control station 2, where the processing unit 13 is determined by the spherical the front of an electromagnetic wave from each of the closest stations to the mobile object and using the method of overlapping spheres is determined by the point of intersection of the spheres. Knowing the coordinates of the exact positioning of base stations are determined by the coordinates of the intersection of the spheres.

To ensure the required accuracy necessary to synchronize the internal clock network SPRD with hours of artificial earth satellites. This is done using hardware synchronization 12 installed on the control station 2, where the signal receiver 6 navigation satellite system receives satellite marks the exact time.

The processing unit 13 and control station 2, using Geoinformation the ing system (GIS) 11, the coordinates of moving objects from satellites, calculated differential correction coordinate measurement data telecommunications network equipment SPRD, the timing of the satellites network SPRD using the software determines the exact location of each of the moving object 4 K. the Calculated coordinates are transmitted to the moving objects.

When the entire set of measurements, the accuracy of determining the coordinates of a moving object can be up to 0.1 m

The performance determination of the coordinates of a moving object, as well as the constancy of the measurement accuracy with increasing socrety of movement of a moving object is achieved by the combined use of network equipment synchronous fixed-line communications, allowing you to work in real time without loss of quality, and use of fiber-optic communication lines, allowing communication between base stations without direct line of sight with high performance and reliability.

The functionality of the proposed system in contrast to the prototype of the increase due to its versatility, as the network equipment synchronous fixed-line communications can be a technology equipment synchronous digital hierarchy SDH or equipment technologies optical Tr is spartoi OTN network, or any other similar equipment, and the equipment SPRD can be any technology broadband access (e.g., 4G, WiMax, LTE etc)that allows the use of this invention as in the already-built communication systems with the above technologies, and to build new systems using a wide range of possible technologies.

1. The system for determining the position of moving objects in real-time using the network synchronous fixed-line communications containing artificial Earth satellites of the global navigation satellite system installed stationary in the reference point with known geographic coordinates and containing geographic information system (GIS) control station, base station, mobile objects that are installed on mobile objects and dispatching station and associated with artificial Earth satellites receivers navigation satellite systems, fiber-optic communication line that provides connections between base stations and between at least one base station and control station, wherein each base stations are stationary in the reference points with known coordinates and has its own identification number, mobile objects, and the base stations of the set t is ELECOMMUNICATION equipment broadband wireless access, realizing the connection between the mobile and base stations via broadband radio, in addition, in a control station installed equipment for time synchronization and navigation equipment of artificial Earth satellites, Telecom equipment broadband wireless access and a processing unit with software that enables collaboration and navigation equipment satellites and telecommunications equipment in a broadband wireless access, also the dispatching station and each of the base stations installed network equipment synchronous fixed-line communication for work on fiber-optic communication lines.

2. The system for determining the position of moving objects in real-time using the network synchronous fixed-line communication according to claim 1, characterized in that the identification number of each base station is the IP address of the base station.

3. The system for determining the position of moving objects in real-time using the network synchronous fixed-line communication according to claim 1, wherein the network equipment is synchronous fixed-line communications is a technology equipment synchronous digital hierarchy SDH, or equipment utilizes the GII optical transport network, OTN, or any other similar equipment.



 

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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.

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1 dwg

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

14 cl, 34 dwg

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