CN205317948U - Satellite navigation assistance -localization real -time system - Google Patents

Abstract

The utility model provides a satellite navigation assistance -localization real -time system, relates to the satellite navigation location. It goes through server and receiver to be equipped with the star, the star is gone through the server and is equipped with reference station and data service center, and the reference station is equipped with original data collection module and data transmission control module, data service center is equipped with elementary item and extension item, and the elementary item is equipped with data storage module, format conversion module, elementary item data transmission control module, access control module and data acquisition module, and the extension item is equipped with the star and goes through calculation module, satellite set pattern module, an extension item data transmission control module, the receiver is equipped with chip and peripheral control module, and the chip is equipped with long star and goes through calculation module, supplementary galaxy storage module, warm boot message counting module and chip data transmission control module, the peripheral control module is equipped with mobile network linking module, a -GNSS agreement module, server access control module, GPS big dipper satellite signal receiving and processing module and peripheral control data transmission control module.

Description

A kind of satellite navigation aided positioning system

Technical field

The utility model relates to satellite navigation location, especially relates to a kind of satellite navigation aided positioning system.

Background technology

Satellite navigation aided positioning system is a kind ofly to provide receiver signal to catch and mode and the technology of locating required information data by the external world, receiver signal acquisition procedure be can accelerate, primary positioning time, the acquisition and tracking sensitivity that also can improve receiver shortened. Satellite navigation aided positioning system is mainly, by various data communication networks, the side information data such as GNSS satellite ephemeris are offered to receiver all the time, use on the one hand reference station network collect satellite supplementary and broadcast by data communication network, mobile network also can be receiver the rough information such as position, time is provided on the other hand.

Provide at satellite navigation aided positioning system under the condition of ephemeris, time and receiver rough position, all startup forms of receiver all become thermal starting conventionally, so location generally can complete in 5s first. The receiver of satellite navigation aided positioning system support not only can greatly reduce the hunting zone in signal capture, and needn't move continuously in order to obtain in real time ephemeris parameter from satellite-signal again, therefore can greatly reduce the power consumption of receiver.

Satellite navigation aided positioning system operation principle as shown in Figure 1, reference station network receives the information such as all aeronautical satellite a-signals collection real-time satellite ephemeris, clock correction and is stored to ephemeris server 11 by continuation, and broadcast by mobile network, part ephemeris server possesses the function of the accurate ephemeris of predict future a period of time satellite, and the almanac data of predicting also can be broadcast by mobile network; For the receiver 12 that has mobile network to access, mobile network base station P(is as CDMA, GSM, 3G-UMTS, 4G etc.) information such as receiver time, frequency and rough position can be provided.

Receiver utilizes time, the frequency of satellite ephemeris and self, the coarse value of position, can calculate rough satellite-signal propagation time and movement velocity, dwindles the hunting zone of Doppler frequency and spreading code phase place in signal capture process, effectively reduces capture time; After capturing satellite signal, need not wait for that the complete demodulation of ephemeris just can realize location, effectively shortens primary positioning time.

The open one of Chinese patent CN101206254B relates to auxiliary satellite navigation system and global position system GPS receiver, and outstanding purport is a kind of is mainly used in high sensitivity navigation neceiver under indoor environment and indoor positioning global positioning system receiver and the auxiliary satellite navigation navigation system of high sensitivity Technique of Satellite Navigation and Positioning thereof. This system at least comprises: terminal receiver, reference receiver, location-server and communication network, and each device is combined as holistic indoor locating system, and whole system is divided into high sensitivity satellite navigation receiver and network assistance system; The locate mode that the method combines with the continuous location of strong signal conditioning by the single-point location of weak signal conditions; Mainly solve the Relational Questions such as overall hard-wired combination.

Chinese patent CN101806902B discloses a kind of receiver for Beidou satellite navigation and positioning system, the LNA unit, mixing unit, Quadratic Orthogonal mixing demodulating unit and the bandpass filtering unit that comprise the low-power consumption connecting successively, carry out producing intermediate frequency output signal after two-stage mixing to Big Dipper satellite signal; Its printed circuit board (PCB) adopts multilayer wiring, the signal being easily disturbed shielded in intermediate layer, and described receiver employing 3.3V Power supply, its electronic component adopts little encapsulation crystal.

Summary of the invention

The purpose of this utility model is to provide receiver to utilize supplementary to realize location fast, a kind of satellite navigation aided positioning system that effectively shortens positioning time.

The utility model is provided with ephemeris server and receiver, and the Access Control module of ephemeris server is connected with receiver by mobile network base station or satellite;

Described ephemeris server is provided with reference station and data service center, and reference station is provided with raw data acquisition module and Data Transmission Controlling module; Data service center is provided with elementary item and extension, elementary item is provided with data memory module, format converting module, elementary item Data Transmission Controlling module, user access control module and data acquisition module, and extension is provided with ephemeris and calculates module, satellite scale piece, extension Data Transmission Controlling module;

Described receiver is provided with chip and peripheral control module, and chip is provided with long ephemeris and calculates module, auxiliary galaxy memory module, thermal starting information computing module and chip data transmission control module; Peripheral control module is provided with mobile network's link block, A-GNSS protocol module, server Access Control module, GPS/ Big Dipper satellite signal receiving processing module and peripheral control Data Transmission Controlling module.

The input of described raw data acquisition module gathers the initial data of satellite A, the input of the output termination Data Transmission Controlling module of raw data acquisition module, the output termination elementary item Data Transmission Controlling module of Data Transmission Controlling module, format converting module is connected with data memory module and elementary item Data Transmission Controlling module respectively; Data acquisition module is connected with user access control module and elementary item Data Transmission Controlling module respectively; Satellite scale piece calculates that with ephemeris module and extension Data Transmission Controlling module are connected, and extension Data Transmission Controlling module is connected with elementary item Data Transmission Controlling module; Auxiliary galaxy memory module calculates that with long ephemeris module and chip data transmission control module are connected respectively, thermal starting information computing module is connected with chip data transmission control module, described A-GNSS protocol module is connected with mobile network's link block and server Access Control module respectively, and server Access Control module is connected with peripheral control Data Transmission Controlling module; The input of the output termination peripheral control Data Transmission Controlling module of GPS/ Big Dipper satellite signal receiving processing module, peripheral control Data Transmission Controlling module is connected with chip data transmission control module.

Compared with existing satellite navigation aided positioning system, the utlity model has following outstanding advantages:

1. precision is high: under good condition, positioning precision can reach 5～30m.

2. positioning time is short: complete one-time positioning and only need several seconds.

3. reliability is strong: even if in the situation that data communication software cannot connect, receiver can be realized quick location equally.

4. can carry out remote monitoring to receiver.

5. as emergency, as plundered, can press hidden flash appeal button is installed, system sends flash appeal note automatically to the mobile phone having set.

6. can carry out Long-distance Control at burst emergency transmitting order to lower levels docking receipts machine.

7. real tracking can carry out receiver time, the automatic keeping track of history track of system.

Brief description of the drawings

Fig. 1 is the fundamental diagram of A-GNSS.

Fig. 2 is the ephemeris server module composition schematic diagram of the utility model embodiment.

Fig. 3 is the receiver module composition schematic diagram of the utility model embodiment.

Detailed description of the invention

Following examples are further described the utility model in connection with accompanying drawing.

Referring to Fig. 2 and 3, the utility model embodiment is provided with ephemeris server and receiver, and the Access Control module of ephemeris server is connected with receiver by mobile network base station or satellite;

Described ephemeris server is provided with reference station and data service center, and reference station is provided with raw data acquisition module 111 and Data Transmission Controlling module 112; Data service center is provided with elementary item and extension, elementary item is provided with data memory module 1211, format converting module 1212, elementary item Data Transmission Controlling module 1213, user access control module 1214 and data acquisition module 1215, and extension is provided with ephemeris and calculates module 1221, satellite scale piece 1222, extension Data Transmission Controlling module 1223;

Described receiver is provided with chip 21 and peripheral control module 22, and chip 21 is provided with long ephemeris and calculates module 211, auxiliary galaxy memory module 212, thermal starting information computing module 213 and chip data transmission control module 214; Peripheral control module 22 is provided with mobile network's link block 221, A-GNSS protocol module 222, server Access Control module 223, GPS/ Big Dipper satellite signal receiving processing module 224 and peripheral control Data Transmission Controlling module 225.

The input of described raw data acquisition module 111 gathers the initial data of satellite A, the input of the output termination Data Transmission Controlling module 112 of raw data acquisition module 111, the output termination elementary item Data Transmission Controlling module 1213 of Data Transmission Controlling module 112, format converting module 1212 is connected with data memory module 1211 and elementary item Data Transmission Controlling module 1213 respectively; Data acquisition module 1215 is connected with user access control module 1214 and elementary item Data Transmission Controlling module 1213 respectively; Satellite scale piece 1222 calculates that with ephemeris module 1221 and extension Data Transmission Controlling module 1223 are connected, and extension Data Transmission Controlling module 1223 is connected with elementary item Data Transmission Controlling module 1213; Auxiliary galaxy memory module 212 calculates that with long ephemeris module 211 and chip data transmission control module 214 are connected respectively, thermal starting information computing module 213 is connected with chip data transmission control module 214, described A-GNSS protocol module 222 is connected with mobile network's link block 221 and server Access Control module 223 respectively, and server Access Control module 223 is connected with peripheral control Data Transmission Controlling module 225; The input of the output termination peripheral control Data Transmission Controlling module 225 of GPS/ Big Dipper satellite signal receiving processing module 224, peripheral control Data Transmission Controlling module 225 is connected with chip data transmission control module 214.

In Fig. 2, the groundwork of reference station server is raw data acquisition and Data Transmission Controlling, and reference station server receives and the stored reference receiver initial data of output in real time, and it is sent to data service center by specific format with CF packing. The groundwork of data service center comprises that initial data is obtained, multistation Data Integration storage, Data Format Transform, Data Transmission Controlling and user access control. Under the prerequisite that has satellite precise position detection data, can expand precise ephemeris and calculate function, under the prerequisite that has synchronous many reference stations observation data, can expand satellite precise orbit determination function. Precision is gone through reckoning and is comprised the long ephemeris computation of self-built formula, only use satellite broadcasting ephemeris to calculate the effective ephemeris in following 3 days, do not rely on the precision positions observation information of satellite, what use is the long ephemeris of almanac data reckoning of GNSS satellite self broadcast, is applicable to connect or cannot obtain without network data the scene of precise ephemeris; Precision is gone through and is calculated that also comprising high accuracy ephemeris simultaneously calibrates, and uses satellite broadcasting ephemeris to proofread and correct the high accuracy ephemeris obtaining from ephemeris server, extends it valid until 30 days.

In Fig. 3, the work that receiver chip inside need complete comprises long ephemeris reckoning, the calculating of thermal starting information, supplementary storage and Data Transmission Controlling etc. Long ephemeris is calculated and is comprised the long ephemeris computation of self-built formula, only uses satellite broadcasting ephemeris to calculate the effective ephemeris in following 3 days; Also comprise the calibration of high accuracy ephemeris, use satellite broadcasting ephemeris to proofread and correct the high accuracy ephemeris obtaining from ephemeris server, extend it valid until 30 days. Thermal starting information is calculated and is referred to utilize auxiliary data to calculate carrier frequency and the spreading code phase search scope of thermal starting. Supplementary storage refers to the read-write operation in BBRAM to auxiliary datas such as long ephemeris. Data Transmission Controlling refers to communicate with peripheral control module, obtains auxiliary data. Peripheral control module mainly completes server Access Control, Data Transmission Controlling, mobile network connects and A-GNSS protocol stack is realized work. Server Access Control realizes access, control connection frequency and the call duration time of receiver module and ephemeris server; Data Transmission Controlling realizes the data communication of data communication, peripheral control module and receiver chip between receiver and ephemeris server; Mobile network has connected receiver module and mobile network's (GSM, CDMA, 3G, 4G etc.) communication connection control; A-GNSS agreement mainly realizes the mobile network A-GNSS communication protocol standard of different systems, obtains the basic auxiliary data (comprising time, frequency and rough position etc.) of A-GNSS from mobile network base station.

Claims (1)

1. a satellite navigation aided positioning system, is characterized in that being provided with ephemeris server and receiver, and the Access Control module of ephemeris server is connected with receiver by mobile network base station or satellite;

Described ephemeris server is provided with reference station and data service center, and reference station is provided with raw data acquisition module and Data Transmission Controlling module; Data service center is provided with elementary item and extension, elementary item is provided with data memory module, format converting module, elementary item Data Transmission Controlling module, user access control module and data acquisition module, and extension is provided with ephemeris and calculates module, satellite scale piece, extension Data Transmission Controlling module;

Described receiver is provided with chip and peripheral control module, and chip is provided with long ephemeris and calculates module, auxiliary galaxy memory module, thermal starting information computing module and chip data transmission control module; Peripheral control module is provided with mobile network's link block, A-GNSS protocol module, server Access Control module, GPS/ Big Dipper satellite signal receiving processing module and peripheral control Data Transmission Controlling module;

The input of described raw data acquisition module gathers the initial data of satellite A, the input of the output termination Data Transmission Controlling module of raw data acquisition module, the output termination elementary item Data Transmission Controlling module of Data Transmission Controlling module, format converting module is connected with data memory module and elementary item Data Transmission Controlling module respectively; Data acquisition module is connected with user access control module and elementary item Data Transmission Controlling module respectively; Satellite scale piece calculates that with ephemeris module and extension Data Transmission Controlling module are connected, and extension Data Transmission Controlling module is connected with elementary item Data Transmission Controlling module; Auxiliary galaxy memory module calculates that with long ephemeris module and chip data transmission control module are connected respectively, thermal starting information computing module is connected with chip data transmission control module, described A-GNSS protocol module is connected with mobile network's link block and server Access Control module respectively, and server Access Control module is connected with peripheral control Data Transmission Controlling module; The input of the output termination peripheral control Data Transmission Controlling module of GPS/ Big Dipper satellite signal receiving processing module, peripheral control Data Transmission Controlling module is connected with chip data transmission control module.