CN204009078U - The multi-mode signal receiver of SBAS and GPS compatibility - Google Patents
The multi-mode signal receiver of SBAS and GPS compatibility Download PDFInfo
- Publication number
- CN204009078U CN204009078U CN201420451843.9U CN201420451843U CN204009078U CN 204009078 U CN204009078 U CN 204009078U CN 201420451843 U CN201420451843 U CN 201420451843U CN 204009078 U CN204009078 U CN 204009078U
- Authority
- CN
- China
- Prior art keywords
- radio
- frequency front
- frequency
- gps
- sbas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The utility model discloses the multi-mode signal receiver of SBAS and GPS compatibility, comprise the receiving end, storer and the transmitter that connect successively; Described receiving end comprises three RF radio-frequency front-ends, is respectively the RF radio-frequency front-end taking GRM7520 as master chip, the 2nd RF radio-frequency front-end taking GP2015 as master chip and the 3rd RF radio-frequency front-end taking Max2741 as master chip; Described storer is FPGA, the data of packing storing received end; Described transmitter is USB controller, for the data of transmission processor.Utility model is with respect to general location receiver, and therefore the signal for the treatment of S BAS and two kinds of patterns of GPS has simultaneously improved positioning precision, reliability and the integrity of single GPS positioning system significantly.
Description
Technical field
The utility model relates to the signal reception & disposal field of navigator fix, relates in particular to the multi-mode signal receiver of a kind of SBAS and GPS compatibility.
Background technology
Utilize position location satellite, the system that positions in real time in the world, navigates, is called Global Positioning System (GPS) GPS (Global Positioning System).Gps system, taking 24, whole world location artificial satellite as basis, provides a kind of radio-navigation positioning system of the information such as three-dimensional position, three-dimensional velocity round-the-clockly to all parts of the world.It is made up of three parts, and the one, ground control section, is made up of master station, ground-plane antenna, monitoring station and communication backup system.The 2nd, space segment, is made up of 24 satellites, is distributed in 6 orbit planes.The 3rd, user's set part, is made up of GPS receiver and satellite antenna.The ultimate principle of GPS navigation system is to measure the satellite of known location to the distance between receiver user, and then the data of comprehensive multi-satellite just can be known the particular location of receiver.Reach this purpose, the time that the position of satellite can be recorded according to spaceborne clock finds in satellite ephemeris.User propagates into by recording satellite-signal the time that user experiences to the distance of satellite, being multiplied by the light velocity obtains (due to the ionospheric interference of atmospheric envelope again, this distance is not the actual distance between user and satellite, but pseudorange (PR): in the time that gps satellite is normally worked, can constantly launch navigation message by the pseudo-random code (abbreviation pseudo-code) of 1 and 0 binary element composition.The pseudo-code one that gps system uses has two kinds, is respectively civilian C/A code and military PNR (Y) code.C/A code frequency 1.023MHz, one millisecond of repetition period, intersymbol, apart from 1 microsecond, is equivalent to 300m; P code frequency 10.23MHz, 266.4 days repetition periods, intersymbol, apart from 0.1 microsecond, is equivalent to 30m.And Y code is to form on the basis of P code, security performance is better.Navigation message comprises the information such as satellite ephemeris, working condition, clock correction, ionospheric delay correction, refraction correction.It is that rectification out, is modulated at and launches on carrier frequency with 50b/s from satellite-signal.In the each prime frame of navigation message, comprise 5 every frame length 6s of subframe.Each 10 character codes of first three frame; Every 30 seconds repeat once, and renewal per hour once.Rear two frames are 15000b altogether.Content in navigation message mainly contains telemetry code, hand over word, the 1st, 2,3 data blocks, and wherein most important is almanac data.In the time that user receives navigation message, extract satellite time and itself and the clock of oneself are contrasted to the distance that just can learn satellite and user, present position when satellite almanac data in recycling navigation message is extrapolated satellite launch text, the information such as the position and speed of user in WGS-84 earth coordinates just can be learnt.The effect of visible GPS navigation system satellite portion is exactly constantly to launch navigation message.But, because the clock that user's receiver uses can not always be synchronizeed with satellite carried clock, so except user's three-dimensional coordinate x, y, z, also will introduce a Δ t and be mistiming between satellite and receiver as unknown number, then use 4 equations by these 4 unknown number solutions out.If so wonder the residing position of receiver, at least want to receive the signal of 4 satellites.
For strengthening the navigation performance of existing GPS and GLONASS system, US Federal Aviation Administration (FAA), Europe and Japan have proposed three kinds of SBAS (Satellite Based Augmentation System, satellite-based augmentation system): WAAS, EGNOS and MSAS system.SBAS is that the modern wide area differential of one that uses geostationary orbit satellite to set up strengthens system.SBAS broadcasts range finding, wide area differential and satellite integrity information by geostationary orbit satellite, can significantly improve positioning precision, integrity and the reliability of existing global navigation satellite system GNSS (Global Navigation Satellite System).
The SBAS of global evolution has European EGNOS at present, covers Continental Europe; The WAAS of the U.S., covers American continent; The MSAS of Japan, covers Asia continent.After above three system perfectings, can realize global seamless enhancement service, meet many-sided application requirements such as transport location, land, sea, air and navigation.
In recent years, be subject to the impact of software radio thought, increasing GPS receiver is realized with software approach, but GPS software receiver can only be processed single gps signal, has very large deficiency in positioning precision and reliability.
Utility model content
The purpose of this utility model is to overcome the defect that prior art exists, provide a kind of can receive simultaneously SBAS and gps signal, high, the SBAS of good reliability of precision and the multi-mode signal receiver of GPS compatibility.
The technical scheme that realizes the utility model object is the multi-mode signal receiver of SBAS and GPS compatibility, comprises the receiving end, storer and the transmitter that connect successively; Described receiving end comprises three RF radio-frequency front-ends, is respectively the RF radio-frequency front-end taking GRM7520 as master chip, the 2nd RF radio-frequency front-end taking GP2015 as master chip and the 3rd RF radio-frequency front-end taking Max2741 as master chip; Described storer is FPGA, the data of packing storing received end; Described transmitter is USB controller, for the data of transmission processor.
The fpga chip that described processor adopting model is Spartan3XC3S400, inside comprises two block storages, is respectively FIFOA and FIFOB, uses ping-pong to carry out data storage; Described transmitter adopts the USB controller that model is CY7C68013A; The digital intermediate frequency of a described RF radio-frequency front-end is 4.092MHz, and sample frequency is 16.368MHz; The digital intermediate frequency of described the 2nd RF radio-frequency front-end is 1.405MHz, and sample frequency is 5.714MHz; The digital intermediate frequency of described the 3rd RF radio-frequency front-end is 3.78MHz, and sample frequency is 13MHz.
Adopt after technique scheme, the utlity model has following positive effect: (1) the utility model uses a GPS radio frequency hardware module to receive SBAS and two kinds of signals of GPS, realize the satellite-signal that receives simultaneously and transmit SBAS and two kinds of patterns of GPS, significantly improved positioning precision and reliability.
(2) receiver structure of the present utility model is simple, do not comprise localization process part, Base-Band Processing below and localization process all realize in follow-up software environment, are no longer dependent on the framework of common hardware receiver, hardware device is simplified greatly, and fiduciary level degree of accuracy improves greatly.
Brief description of the drawings
For content of the present utility model is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is structured flowchart of the present utility model.
Attached number in the figure is:
Receiving end 11, a RF radio-frequency front-end 11-1, the 2nd RF radio-frequency front-end 11-2, the 3rd RF radio-frequency front-end 11-3, processor 12, transmitter 13.
Embodiment
(embodiment 1)
See Fig. 1, the multi-mode signal receiver of the SBAS of the present embodiment and GPS compatibility, comprises the receiving end 11, storer 12 and the transmitter 13 that connect successively; Described receiving end 11 comprises three RF radio-frequency front-ends, is respectively the RF radio-frequency front-end 11-1 taking GRM7520 as master chip, the 2nd RF radio-frequency front-end 11-2 taking GP2015 as master chip and the 3rd RF radio-frequency front-end 11-3 taking Max2741 as master chip; Described storer 12 is FPGA, the data of packing storing received end 11; Described transmitter 13 is USB controller, for the data of transmission processor 12.It is the fpga chip of Spartan3XC3S400 that described processor 12 adopts model, and inside comprises two block storages, is respectively FIFOA and FIFOB, uses ping-pong to carry out data storage; It is the USB controller of CY7C68013A that described transmitter 13 adopts model; The digital intermediate frequency of a described RF radio-frequency front-end 11-1 is 4.092MHz, and sample frequency is 16.368MHz; The digital intermediate frequency of described the 2nd RF radio-frequency front-end 11-2 is 1.405MHz, and sample frequency is 5.714MHz; The digital intermediate frequency of described the 3rd RF radio-frequency front-end 11-3 is 3.78MHz, and sample frequency is 13MHz.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
- The multi-mode signal receiver of 1.SBAS and GPS compatibility, is characterized in that: comprise the receiving end (11), storer (12) and the transmitter (13) that connect successively; Described receiving end (11) comprises three RF radio-frequency front-ends, is respectively the RF radio-frequency front-end (11-1) taking GRM7520 as master chip, the 2nd RF radio-frequency front-end (11-2) taking GP2015 as master chip and the 3rd RF radio-frequency front-end (11-3) taking Max2741 as master chip; Described storer (12) is FPGA, the data of packing storing received end (11); Described transmitter (13) is USB controller, for the data of transmission processor (12).
- 2. the multi-mode signal receiver of SBAS according to claim 1 and GPS compatibility, it is characterized in that: described processor (12) adopts the fpga chip that model is Spartan3XC3S400, inside comprises two block storages, be respectively FIFOA and FIFOB, use ping-pong to carry out data storage; Described transmitter (13) adopts the USB controller that model is CY7C68013A; The digital intermediate frequency of a described RF radio-frequency front-end (11-1) is 4.092MHz, and sample frequency is 16.368MHz; The digital intermediate frequency of described the 2nd RF radio-frequency front-end (11-2) is 1.405MHz, and sample frequency is 5.714MHz; The digital intermediate frequency of described the 3rd RF radio-frequency front-end (11-3) is 3.78MHz, and sample frequency is 13MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420451843.9U CN204009078U (en) | 2014-08-11 | 2014-08-11 | The multi-mode signal receiver of SBAS and GPS compatibility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420451843.9U CN204009078U (en) | 2014-08-11 | 2014-08-11 | The multi-mode signal receiver of SBAS and GPS compatibility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204009078U true CN204009078U (en) | 2014-12-10 |
Family
ID=52049056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420451843.9U Expired - Fee Related CN204009078U (en) | 2014-08-11 | 2014-08-11 | The multi-mode signal receiver of SBAS and GPS compatibility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204009078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115616890A (en) * | 2022-09-28 | 2023-01-17 | 广西自贸区见炬科技有限公司 | Thermoelectric system clock error prediction error correction system |
-
2014
- 2014-08-11 CN CN201420451843.9U patent/CN204009078U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115616890A (en) * | 2022-09-28 | 2023-01-17 | 广西自贸区见炬科技有限公司 | Thermoelectric system clock error prediction error correction system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109061677B (en) | Method for satellite-based navigation enhancement by using low-earth orbit satellite | |
| CN110488328B (en) | Message receiving and sending method and system for low-orbit satellite navigation enhancement platform | |
| EP2856208B1 (en) | Global positioning system (gps) and doppler augmentation (gdaug) and space location inertial navigation geopositioning system (spacelings) | |
| US6647340B1 (en) | Space based augmentation systems and methods using ionospheric bounding data to determine geographical correction source | |
| KR101581653B1 (en) | Global positioning system receiver and locating method therof | |
| CN102540228A (en) | High precision single point positioning system of single frequency global positioning system (GPS) and method | |
| CN104155666A (en) | SBAS (Satellite Based Augmentation System) and GPS (Global Positioning System)-compatible multi-mode signal processing system and signal processing method thereof | |
| CN102866410A (en) | Method for position determination with measurement stitching | |
| Kumar et al. | Introduction to GPS/GNSS technology | |
| US11624838B2 (en) | System and method for providing GNSS corrections | |
| US9562974B2 (en) | Multiple content message base-rover architecture | |
| CN204086553U (en) | Based on coastal waters and the port area positioning system of Big Dipper pseudo satellite, pseudolite | |
| CN102749637A (en) | Method for realizing accurate positioning of vehicle-mounted GPS (Globe Positioning System) | |
| CN105005061B (en) | A kind of localization method and system based on satellite base station | |
| CN104597463A (en) | Receiver and satellite ephemeris or almanac effectiveness judging method | |
| CN204009078U (en) | The multi-mode signal receiver of SBAS and GPS compatibility | |
| CN105158781A (en) | Method for realizing outer space use positioning by earth GNSS satellites | |
| Kumar et al. | A hypothetical analysis on GPS evolution, error sources, accuracy measures and positioning services | |
| Choy et al. | High Accuracy Real-Time Precise Point Positioning using the Japanese Quasi-Zenith Satellite System LEX Signal. | |
| CN204044367U (en) | A kind of pseudo-distance and Doppler combine differential position system | |
| CN204269827U (en) | A kind of GPS positioning system | |
| US8085191B2 (en) | Position determination based on corroborated signal processing of PRN codes | |
| Svaton | Low-cost implementation of Differential GPS using Arduino | |
| Nguyen et al. | The Method for Enhancing Positioning Accuracy Based on Automatic Identification System | |
| Bosneagu | GPS VERSUS ELORAN. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20210811 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |