CN204116607U - A kind of Big Dipper/GPS dual-mode satellite positioning receiver - Google Patents
A kind of Big Dipper/GPS dual-mode satellite positioning receiver Download PDFInfo
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- CN204116607U CN204116607U CN201420464104.3U CN201420464104U CN204116607U CN 204116607 U CN204116607 U CN 204116607U CN 201420464104 U CN201420464104 U CN 201420464104U CN 204116607 U CN204116607 U CN 204116607U
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Abstract
The utility model relates to a kind of Big Dipper/GPS dual-mode satellite positioning receiver.This Big Dipper/GPS dual-mode satellite positioning receiver comprises the Big Dipper/GPS down-converter unit, signal processing unit, PVT solving unit, RTC keep time unit and external interface unit.The utility model compensate for the deficiency of gps system and BEI-DOU position system, big-dipper satellite locating module can be selected flexibly as peripheral hardware accessory user, alleviate the purchase pressure of user, reduce the use threshold of dipper system, be conducive to the process advancing dipper system civilian, impel the social benefit of dipper system performance self more early, meet national security and socio-economic development to the demand of satellite navigation system, can promote that national information construction and Economic Development Mode change, to the Social benefit and economic benefit realizing satellite navigation industry, there is significant role.
Description
Technical field
The utility model relates to positioning and navigation field, particularly relates to a kind of Big Dipper/GPS dual-mode satellite positioning receiver.
Background technology
In China domestic scope, operable navigational system mainly contains the GPS (global positioning system) of the U.S. and the Beidou satellite navigation system (BEIDOU (COMPASS) Navigation Satellite System) of China's independent research at present.Wherein to possess positioning precision high for gps system, the advantages such as wide coverage, but because this system is that the military of other country controls, artificially can increase its positioning error under specific circumstances or make it lose efficacy, the end product of applying GPS only possesses the ability of unidirectional reception locating information in addition, lacks the interactive communication between terminal and system.Beidou satellite navigation system be China implementing independent development capability, independent operating GPS (Global Position System), 9 satellites are transmitted at present, system has possessed and has covered the location of the Asian-Pacific area, navigation and time service and short message communication service capabilities, and the year two thousand twenty left and right is covering the whole world.Dipper system is devoted to provide location, navigation and time service service, current positioning precision 10 meters, degree of testing the speed 0.2 meter per second, time service precision 10 nanosecond to Global Subscriber.The current positioning precision of dipper system is low, and the shortcoming that coverage is little also counteracts that and to be adopted by more products.Therefore, how to realize the location navigation of high precision, wide model horse stable, can take precautions against again other country's human intervention positioning function, guarantee between terminal and system can effective communication simultaneously, becomes a great problem of current generation China's development autonomous navigation system.
Utility model content
The purpose of this utility model is to provide a kind of Big Dipper/GPS dual-mode satellite positioning receiver that can overcome above defect.
For achieving the above object, the utility model provides a kind of Big Dipper/GPS dual-mode satellite positioning receiver.This receiver comprises the Big Dipper/GPS down-converter unit, signal processing unit, PVT solving unit, RTC keep time unit and external interface unit, the described Big Dipper/GPS down-converter unit is electrically connected with signal processing unit, for satellite-signal is carried out down coversion, described signal comprises GPS and Beidou navigation satellite-signal; Described signal processing unit is electrically connected with PVT solving unit, for tracking satellite signal, take user clock as reference, provides each satellite-signal time of arrival, demodulating data, time of arrival (toa) are sent into PVT solving unit; Described RTC unit of keeping time is electrically connected with PVT solving unit, for PVT solving unit output time information, and the maintenance of deadline benchmark; PVT solving unit is electrically connected with external interface unit, for calculating the Position, Velocity and Time value of subscriber computer; External interface unit, for exporting the Position, Velocity and Time value of the subscriber computer that PVT solving unit calculates.
Preferably, the described Big Dipper/GPS dual-mode satellite positioning receiver also comprises Active Receiving Antenna, and it is electrically connected with the Big Dipper/GPS down-converter unit, for receiving and dispatching the Big Dipper/gps satellite navigation signal.
Further preferably, described Active Receiving Antenna comprises the Big Dipper/gps antenna plate and low noise amplifier.
Preferably, the described Big Dipper/GPS down-converter unit comprises: BD-2 down coversion passage and GPS down coversion passage.
Preferably, described signal processing unit comprises: BD-2 signal processing channel and gps signal treatment channel.
Preferably, the described Big Dipper/GPS dual-mode satellite positioning receiver also comprises power module, for each module for power supply.
The utility model compensate for the deficiency of gps system and BEI-DOU position system, big-dipper satellite locating module can be selected flexibly as peripheral hardware accessory user, alleviate the purchase pressure of user, reduce the use threshold of dipper system, be conducive to the process advancing dipper system civilian, impel the social benefit of dipper system performance self more early, meet national security and socio-economic development to the demand of satellite navigation system, can promote that national information construction and Economic Development Mode change, to the Social benefit and economic benefit realizing satellite navigation industry, there is significant role.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Big Dipper/GPS dual-mode satellite positioning receiver according to the utility model embodiment.
Embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Locate because current Beidou II system satellite data is not enough to complete separately and reaches higher positioning function, therefore the utility model supplements further based on existing mature gps system and strengthens system-satellite signal resource, solves the problem that Big Dipper positioning precision is not high.The so-called Big Dipper and GPS dual-mode Fault-tolerant Integrated, receive simultaneously and measure Beidou II system and GPS two kinds of satellite-signals with a satellite positioning receiver exactly, so as our each system Anywhere, any time accurately measures three-dimensional position.Three-dimensional velocity.The correlation parameter such as time and attitude.
The positioning function of the Big Dipper and GPS will be combined in a unit by the Big Dipper/GPS dual-mode integrated positioning, is the performance that railway system user provides urgently needed GPS or forbidding Beidou II receiver to obtain.Due to these two kinds of satellite based navigational systems of Beidou II system and GPS purchase in system, navigator fix encourages, substantially identical or close in working frequency range, modulation system, signal and almanac data structure etc., all to launch spread spectrum ranging code, pseudorange between instrumented satellite and user completes navigator fix, utilizes a subscriber equipment to accept the possibility of these two kinds of satellite-signals so just exist simultaneously.
Fig. 1 is the structural representation of a kind of Big Dipper/GPS dual-mode satellite positioning receiver according to the utility model embodiment.
As shown in Figure 1, the Big Dipper/GPS dual-mode satellite positioning receiver of this embodiment comprises Active Receiving Antenna, the Big Dipper/GPS down-converter unit, signal processing unit, PVT solving unit, RTC keep time unit, external interface unit and power module.
Active Receiving Antenna comprises the Big Dipper/gps antenna plate and low noise amplifier, and it is electrically connected with the Big Dipper/GPS down-converter unit, mainly receives and dispatches the Big Dipper/gps satellite navigation signal.
The Big Dipper/GPS down-converter unit is electrically connected with signal processing unit, carries out down coversion for satellite-signal Active Receiving Antenna sent here, and this signal is GPS and Beidou navigation satellite-signal.The Big Dipper/GPS down-converter unit comprises BD-2 down coversion passage and GPS down coversion passage.
Signal processing unit is electrically connected with PVT solving unit, for following the tracks of the satellite-signal that active antenna is sent here, is reference with user clock, provides each satellite-signal time of arrival, demodulating data, time of arrival (toa) are sent into PVT solving unit.Signal processing unit comprises BD-2 signal processing channel and gps signal treatment channel.
RTC unit of keeping time is electrically connected with PVT solving unit, by battery uninterrupted power supply, to PVT solving unit output time information, and the maintenance of deadline benchmark.
PVT solving unit is electrically connected with external interface unit, and it is mainly digital processing (DSP) software, realizes the data processing such as filtering, positioning error correction of the data-interface of DSP and internal circuit, the resolving of the elements of a fix, positioning result.
External interface unit, for exporting the Position, Velocity and Time value of the subscriber computer that PVT solving unit calculates.
Power module, for each module for power supply.
Specific works process is: the satellite navigation signals that active antenna gathers amplifies through low noise amplifier LNA, point two-way after power amplifier (under GPS frequently under passage and BD-2 frequently passage) exports to signal processing unit, after A/D conversion, signal processing unit is caught respectively to the Big Dipper and GPS navigation signal, follow the tracks of, observed quantity extraction and navigation message extract, the signal of different satellite respectively with different signalling channel process, concurrent working.Signal processing unit exports the observation data such as navigation message and code pseudorange, Doppler frequency, carrier phase measurement and local zone time to PVT solving unit.Multiple passage receives the signal of multi-satellite respectively, measurement data (comprises synchronous earth satellite, inclined plane earth satellite, middle altitude circle orbiter) and navigation message give PVC solving unit and carry out independent navigation computing, under the tracking mode of pseudo-code, calculate the pseudorange of user to satellite, if receive the pseudorange of more than 4 satellites, and by some means (differential corrections, model Senior Minister, double frequency correction etc.) propagation delay of pseudorange is revised, then can obtain the measurement system of equations of pseudorange, satellite position is obtained by the navigation message comprised in demodulating data, then can be resolved by observation equation and obtain the position of user and the clock correction of satellite and user.Draw the exact position of subscriber computer, speed, time (PVT) by the solution process of some row, measurement data and PVT value are exported by external interface unit.
The utility model compensate for the deficiency of gps system and BEI-DOU position system, big-dipper satellite locating module can be selected flexibly as peripheral hardware accessory user, alleviate the purchase pressure of user, reduce the use threshold of dipper system, be conducive to the process advancing dipper system civilian, impel the social benefit of dipper system performance self more early, meet national security and socio-economic development to the demand of satellite navigation system, can promote that national information construction and Economic Development Mode change, to the Social benefit and economic benefit realizing satellite navigation industry, there is significant role.
Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only embodiment of the present utility model; and be not used in restriction protection domain of the present utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. the Big Dipper/GPS dual-mode satellite positioning receiver, is characterized in that, comprises the Big Dipper/GPS down-converter unit, signal processing unit, PVT solving unit, RTC keep time unit and external interface unit,
The described Big Dipper/GPS down-converter unit is electrically connected with signal processing unit, and for satellite-signal is carried out down coversion, described signal comprises GPS and Beidou navigation satellite-signal;
Described signal processing unit is electrically connected with PVT solving unit, for tracking satellite signal, take user clock as reference, provides each satellite-signal time of arrival, demodulating data, time of arrival (toa) are sent into PVT solving unit;
Described RTC unit of keeping time is electrically connected with PVT solving unit, for PVT solving unit output time information, and the maintenance of deadline benchmark;
PVT solving unit is electrically connected with external interface unit, for calculating the Position, Velocity and Time value of subscriber computer;
External interface unit, for exporting the Position, Velocity and Time value of the subscriber computer that PVT solving unit calculates.
2. the Big Dipper according to claim 1/GPS dual-mode satellite positioning receiver, is characterized in that, also comprise Active Receiving Antenna, and it is electrically connected with the Big Dipper/GPS down-converter unit, for receiving and dispatching the Big Dipper/gps satellite navigation signal.
3. the Big Dipper according to claim 2/GPS dual-mode satellite positioning receiver, is characterized in that, described Active Receiving Antenna comprises the Big Dipper/gps antenna plate and low noise amplifier.
4. the Big Dipper according to claim 1/GPS dual-mode satellite positioning receiver, is characterized in that, the described Big Dipper/GPS down-converter unit comprises: BD-2 down coversion passage and GPS down coversion passage.
5. the Big Dipper according to claim 1/GPS dual-mode satellite positioning receiver, is characterized in that, described signal processing unit comprises: BD-2 signal processing channel and gps signal treatment channel.
6. the Big Dipper according to claim 1/GPS dual-mode satellite positioning receiver, is characterized in that, also comprise power module, for each module for power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420464104.3U CN204116607U (en) | 2014-08-15 | 2014-08-15 | A kind of Big Dipper/GPS dual-mode satellite positioning receiver |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420464104.3U CN204116607U (en) | 2014-08-15 | 2014-08-15 | A kind of Big Dipper/GPS dual-mode satellite positioning receiver |
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| CN204116607U true CN204116607U (en) | 2015-01-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108897020A (en) * | 2018-05-14 | 2018-11-27 | 南开大学 | A kind of calculation method that Beidou is mutually calibrated with GPS geographical location information |
| CN110032058A (en) * | 2019-04-17 | 2019-07-19 | 北京电子工程总体研究所 | A kind of time service equipment, time dissemination system and time service method |
-
2014
- 2014-08-15 CN CN201420464104.3U patent/CN204116607U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108897020A (en) * | 2018-05-14 | 2018-11-27 | 南开大学 | A kind of calculation method that Beidou is mutually calibrated with GPS geographical location information |
| CN110032058A (en) * | 2019-04-17 | 2019-07-19 | 北京电子工程总体研究所 | A kind of time service equipment, time dissemination system and time service method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20170815 |