CN204705709U - Test beacon signal generating apparatus and positioning system - Google Patents
Test beacon signal generating apparatus and positioning system Download PDFInfo
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- CN204705709U CN204705709U CN201520301009.6U CN201520301009U CN204705709U CN 204705709 U CN204705709 U CN 204705709U CN 201520301009 U CN201520301009 U CN 201520301009U CN 204705709 U CN204705709 U CN 204705709U
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Abstract
The utility model provides a kind of test beacon signal generating apparatus, and it comprises gps signal receiver, data-carrier store, locator data processor, Beacon signal generator and central controller.Wherein gps signal receiver is connected with data-carrier store, and data-carrier store is connected with locator data processor, and locator data processor is connected with central controller, and central controller is connected with Beacon signal generator.The utility model also provides a kind of positioning system.The historical position of the test beacon that test beacon signal generating apparatus of the present utility model and positioning system are gathered by GPS and the accurate location of time scale information prediction signal x time beacon, and encode with this predicted position information, modulate and generate test beacon signal, ensure that institute sends and test in beacon signal the position that the positional information of encoding represents signal x time beacon accurately.
Description
Technical field
The utility model relates to the communications field, particularly relates to a kind of test beacon signal generating apparatus and positioning system.
Background technology
The multipoint location system on airport has that positioning precision is high, redundancy good, installation cost is low and the advantage such as easy care, but to prove whether the positioning precision index of multipoint location system to the effective target in airport reaches requirement, or analyze the positioning result of system, operational factor carries out debugging, need to design a kind of on-road emission test beacon system and be used for skimulated motion or static effective target.
This on-road emission test beacon system generally will reach following two requirements:
One, the radio frequency beacon signal of preset frequency can be launched to multipoint location system, so that multipoint location system carries out wireless location to simulated target.
Two, signal x time can be tested high precision position information corresponding to beacon in each radiofrequency signal with ADS-B (Automatic dependent surveillance broadcast, Automatic dependent surveillance-broadcast) target location message form sends to multipoint location system, so that tester debugs system operational parameters, positioning error carries out adding up and positioning result real time contrast demonstration.
In order to improve the mobility of on-road emission test beacon system, application number is that the utility model patent of a kind of ADS-B beacon based on satnav of 201320555522.9 discloses the mode using satnav, for the use of Radio Beacon in different occasion, different location is provided convenience.
Application number is that the patent of invention of the wireless location system of 200910050634.7 also discloses Radio Beacon use fixed frequency transmitting site information, thus realizes system architecture simplification.
But it is general higher that the signal for the on-road emission test beacon request of multipoint location system test launches repetition, and existing ADS-B on-road emission test beacon system transmitting message information comprises target location report and state report, because state report does not have target position information, consider that GPS self-position sampling rate limits again, so the sample frequency of existing beacon position information to compare test request general lower, be difficult to the exact position ensureing to provide the objective emission moment in the middle of transmitting each time.On the other hand because the sampling of GPS position information and the transmitting of radio frequency beacon signal neither trigger simultaneously, the positional information causing GPS to gather like this when target is kept in motion can not accurate representation beacon in the exact position of signal x time, thus make troubles to tester's debugging, statistical work, the even information interference of mistake.Existing beacon takes traditional GPS to carry out station acquisition in addition, and its positioning precision is not enough to be used as standard and carries out parameter testing and accuracy evaluation to multipoint location system.
Therefore, be necessary to provide a kind of test beacon signal generation method, device and positioning system, to meet the needs of multipoint location system parameter testing and positioning result analytic statistics.
Utility model content
The utility model embodiment provides the test beacon signal generating apparatus and positioning system that a kind of accuracy is high and reliability is strong; The technical matterss such as existing test beacon signal generating apparatus positional information sampling rate is low to solve, precision state difference, for the parameter testing of multipoint location system and interpretation of result statistics provide platform guarantee.
The utility model embodiment provides a kind of test beacon signal generating apparatus, and it comprises:
Gps signal receiver, for pressing setting-up time interval, receive satellite almanac data and the ground difference base station correction parameter of described test beacon signal generating apparatus, and according to described satellite almanac data and correction parameter, calculate the positional information of described test beacon signal generating apparatus;
Data-carrier store, for carrying out storage operation to the positional information of described test beacon signal generating apparatus and the time scale information of correspondence;
Locator data processor, for obtaining the signal transmission time of described test beacon signal generating apparatus, and according to the position of described test beacon signal generating apparatus, time scale information and default prediction algorithm, the predicted position information of described test beacon signal generating apparatus when calculating described signal transmission time; The acquisition time of the positional information of wherein said test beacon signal generating apparatus is all early than the signal transmission time of described test beacon signal generating apparatus;
Beacon signal generator, for by the predicted position information coding of described test beacon signal generating apparatus, be modulated to test beacon signal; And when described signal transmission time, described test beacon signal is sent to locating device; And
Central controller, generates the signal transmission time of described test beacon signal generating apparatus; And described locator data processor, described Beacon signal generator are triggered and configuration change;
Wherein said gps signal receiver is connected with described data-carrier store, described data-carrier store is connected with described locator data processor, described locator data processor is connected with described central controller, and described central controller is connected with described Beacon signal generator.In test beacon signal generating apparatus described in the utility model, described test beacon signal generating apparatus also comprises for receiving the described satellite almanac data of test beacon signal generating apparatus and the differential GPS antenna of correction parameter, and described differential GPS antenna is connected with described gps signal receiver.
In test beacon signal generating apparatus described in the utility model, described test beacon signal generating apparatus also comprises the Clock Card for providing synchronous clock to described central controller, and described Clock Card is connected with described central controller.
In test beacon signal generating apparatus described in the utility model, described test beacon signal generating apparatus also comprises the omnidirectional antenna for described test beacon signal being sent to described locating device, and described omnidirectional antenna is connected with described Beacon signal generator.
In test beacon signal generating apparatus described in the utility model, described gps signal receiver comprise for satellite almanac data and correction parameter are carried out decode record detuner and demoder.
In test beacon signal generating apparatus described in the utility model, described Beacon signal generator comprises the scrambler for encoding to the predicted position information of described test beacon signal generating apparatus, and the modulator for modulating test beacon signal.
The utility model embodiment also provides a kind of positioning system, and it comprises: at least one test beacon signal generating apparatus and a locating device; Described test beacon signal generating apparatus comprises:
Gps signal receiver, for pressing setting-up time interval, receive satellite almanac data and the ground difference base station correction parameter of described test beacon signal generating apparatus, and according to described satellite almanac data and correction parameter, calculate the positional information of described test beacon signal generating apparatus;
Data-carrier store, for carrying out storage operation to the positional information of described test beacon signal generating apparatus and the time scale information of correspondence;
Locator data processor, for obtaining the signal transmission time of described test beacon signal generating apparatus, and according to the position of described test beacon signal generating apparatus, time scale information and default prediction algorithm, the predicted position information of described test beacon signal generating apparatus when calculating described signal transmission time; The acquisition time of the positional information of wherein said test beacon signal generating apparatus is all early than the signal transmission time of described test beacon signal generating apparatus;
Beacon signal generator, for by the predicted position information coding of described test beacon signal generating apparatus, be modulated to test beacon signal; And when described signal transmission time, described test beacon signal is sent to described locating device; And
Central controller, generates the signal transmission time of described test beacon signal generating apparatus; And described locator data processor, described Beacon signal generator are triggered and configuration change;
Wherein said gps signal receiver is connected with described data-carrier store, described data-carrier store is connected with described locator data processor, described locator data processor is connected with described central controller, and described central controller is connected with described Beacon signal generator.
In positioning system described in the utility model, described test beacon signal generating apparatus also comprises for receiving the described satellite almanac data of test beacon signal generating apparatus and the differential GPS antenna of correction parameter, and described differential GPS antenna is connected with described gps signal receiver.
In positioning system described in the utility model, described test beacon signal generating apparatus also comprises the Clock Card for providing synchronous clock to described central controller, and described Clock Card is connected with described central controller.
In positioning system described in the utility model, described test beacon signal generating apparatus also comprises the omnidirectional antenna for described test beacon signal being sent to described locating device, and described omnidirectional antenna is connected with described Beacon signal generator.
Compared to test beacon signal generating apparatus and the positioning system of prior art, the historical position of the test beacon that test beacon signal generating apparatus of the present utility model and positioning system are gathered by GPS and the accurate location of time scale information prediction signal x time beacon, and generate test beacon signal with this predicted position information, ensure that institute sends and test in beacon signal the position that the positional information of encoding represents signal x time beacon accurately, solve existing test beacon signal generating apparatus positional information sampling rate low, the technical matterss such as precision state difference, for the parameter testing of multipoint location system and interpretation of result statistics provide platform guarantee.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first preferred embodiment of positioning system of the present utility model;
Fig. 2 is the structural representation of the second preferred embodiment of positioning system of the present utility model.
Embodiment
Please refer to graphic, wherein identical element numbers represents identical assembly, and principle of the present utility model implements to illustrate in a suitable computing environment.The following description is based on illustrated the utility model specific embodiment, and it should not be regarded as limiting the utility model not at other specific embodiment that this describes in detail.
Positioning system generally comprises locating device and test beacon signal generating apparatus, and test beacon signal generating apparatus generates the test beacon signal of coding containing signal x time beacon physical location, and test beacon signal is sent to locating device; Locating device determines by this test beacon signal the position testing beacon signal generating apparatus, and this position and the physical location of test beacon signal generating apparatus obtained of decoding are contrasted, according to this comparing result system operational parameters to be debugged and positioning result carries out analytic statistics.
Test beacon signal generating apparatus of the present utility model can use in the positioning system such as airport or steamer, beacon signal is tested accurately and reliably, to meet the needs of multipoint location system parameter testing and positioning result analytic statistics for sending signal x time beacon physical location to the locating device in positioning system.
Please refer to Fig. 1, Fig. 1 is the structural representation of the first preferred embodiment of positioning system of the present utility model.This positioning system 10 comprises at least one test beacon signal generating apparatus 11 and a locating device 12.
Wherein test beacon signal generating apparatus 11 and comprise gps signal receiver 111, data-carrier store 112, locator data processor 113, central controller 114 and Beacon signal generator 115.Gps signal receiver 111 is for pressing setting-up time interval, receive satellite almanac data and the correction parameter (as ground difference base station correction parameter) of test beacon signal generating apparatus 11, and according to satellite almanac data and correction parameter, calculate the positional information of test beacon signal generating apparatus 11; Data-carrier store 112 is for carrying out storage operation to the positional information of test beacon signal generating apparatus 11 and the time scale information of correspondence; Wherein this positional information comprises the test coordinate of beacon and the acquisition time etc. of positional information.Locator data processor 113 is for obtaining the signal transmission time of test beacon signal generating apparatus 11, and according to testing the positional information of beacon signal generating apparatus 11 and default prediction algorithm, the predicted position information of the test beacon signal generating apparatus 11 during calculating signal transmission time; Beacon signal generator 115 for by the predicted position information coding of test beacon signal generating apparatus 11, be modulated to test beacon signal; And when signal transmission time, test beacon signal is sent to locating device 12; Central controller 114 is for generating the signal transmission time of test beacon signal generating apparatus 11; Also the predicted position information of described test beacon at signal x time is therefrom obtained for triggered location data processor 113; For triggering Beacon signal generator 115, the predicted position information of the described test beacon obtained is sent with the form of ADS-B target location message; Change configuration is carried out to parameters such as the catchword of Beacon signal generator 115,24 bit address codes and signal transmission time intervals.Locating device 12 utilizes the information such as test beacon signal time of arrival (TOA), time of arrival poor (TDOA) or arrival direction (DOA) to carry out wireless location to test beacon; By comparing wireless location result and the predicted position information that comprises of test beacon signal and carry out parameter testing to multipoint location system and interpretation of result being added up.
Wherein this gps signal receiver 111 can high precision, high stable performance Trimble BD970 mainboard be carrier.Beacon signal generator 115 adopts high-performance XC2V1000-6FGG456I model fpga chip, and test beacon signal is sent to locating device 12 by the RF transmit channel including the functional units such as ASK modulator, pulse power amplifier and wave filter by Beacon signal generator 115.
When the positioning system 10 of this preferred embodiment uses, first setting-up time interval pressed by gps signal receiver 111, receive satellite almanac data and the correction parameter of test beacon signal generating apparatus 11, then detuner and demoder is used to carry out decoding record to satellite almanac data and correction parameter, and according to satellite almanac data and correction parameter, calculate the positional information of test beacon signal generating apparatus 11.
The positional information of subsequent data storer 112 to test beacon signal generating apparatus 11 carries out storage operation.
Then central controller 114 generates the signal transmission time of test beacon signal generating apparatus 11, and this signal transmission time is sent to locator data processor 113.
Locator data processor 113 is according to the positional information of the test beacon signal generating apparatus 11 in data-carrier store 112 and default prediction algorithm subsequently, the predicted position information of the test beacon signal generating apparatus 11 during calculating signal transmission time, wherein tests the acquisition time of the positional information of beacon signal generating apparatus 11 all early than the signal transmission time of test beacon signal generating apparatus 11.
Then central controller 114 triggers the predicted position information that Beacon signal generator 115 receives the test beacon signal generating apparatus 11 that locator data processor 113 generates, or the predicted position information of the test beacon signal generating apparatus 11 generated by locator data processor 113 is forwarded to Beacon signal generator 115.
The predicted position information of scrambler to the test beacon signal generating apparatus 11 that locator data processor 113 generates of last Beacon signal generator 115 is encoded, to generate test beacon signal, modulator is then used to carry out modulation treatment to test beacon signal; And when signal transmission time, test beacon signal after modulation treatment is sent to locating device 12 and is used for wireless location, locating device 12 is by comparing wireless location result and the predicted position information that comprises of test beacon signal and carry out parameter testing to multipoint location system and interpretation of result being added up.
The historical position of test beacon that the positioning system of this preferred embodiment is gathered by GPS and the accurate location of time scale information prediction signal x time beacon, and generate test beacon signal with this predicted position information, ensure that institute sends and test in beacon signal the position that the positional information of encoding represents signal x time beacon accurately, solve the technical matterss such as existing test beacon signal generating apparatus positional information sampling rate is low, precision state difference, for the parameter testing of multipoint location system and interpretation of result statistics provide platform guarantee.
Please refer to Fig. 2, Fig. 2 is the structural representation of the second preferred embodiment of positioning system of the present utility model.The test beacon signal generating apparatus 21 of the positioning system 20 of this preferred embodiment also comprises differential GPS antenna 211, Clock Card 212 and omnidirectional antenna 213 on the basis of the first preferred embodiment.Differential GPS antenna 211 is for receiving satellite almanac data and the correction data of test beacon signal generating apparatus 21; Clock Card 212 provides synchronous clock for giving central controller 114; Omnidirectional antenna 213 is for being sent to locating device 12 with predeterminated frequency by test beacon signal.
When the positioning system 20 of this preferred embodiment uses, first setting-up time interval pressed by gps signal receiver 111, received satellite almanac data and the correction parameter of test beacon signal generating apparatus 21 by differential GPS antenna 211, then use detuner and demoder to carry out decoding record to satellite almanac data and correction parameter; Gps signal receiver 111 is according to satellite almanac data and ground difference base station correction parameter subsequently, calculates the positional information of the test beacon signal generating apparatus 21 of multiple different time points.
The positional information of the test beacon signal generating apparatus 21 of multiple different time points that subsequent data storer 112 pairs of gps signal receivers 111 obtain carries out storage operation.
Then central controller 114 is by Clock Card 212, generates the signal transmission time of test beacon signal generating apparatus 21, and this signal transmission time is sent to locator data processor 113.
Locator data processor 113 uses the positional information of Kalman filtering algorithm to the test beacon signal generating apparatus in data-carrier store 112 to calculate subsequently, the predicted position information of the test beacon signal generating apparatus 21 during to obtain signal transmission time, the signal transmission time wherein testing beacon is later than the acquisition time of the positional information of the test beacon that gps signal receiver 111 obtains.
Then central controller 114 triggers Beacon signal generator 115 and receives the predicted position information of test beacon signal generating apparatus 21 that locator data processor 113 generates, or the test beacon signal generated by locator data processor 113 generates and fills the 21 predicted position information of putting and be forwarded to Beacon signal generator 115.
The scrambler of Beacon signal generator 115 carries out coded treatment, to generate test beacon signal to other configuration informations to be sent such as the predicted position information of the test beacon that locator data processor 113 generates and beacon catchword, 24 bit address codes subsequently.Specifically can be and encode with the form of ADS-B target location message, thus form test beacon signal, then binary modulated device is used to carry out modulation treatment to test beacon signal, and when signal transmission time, by the omnidirectional antenna of setpoint frequency, the test beacon signal after modulation treatment is sent to locating device 12.
Last locating device 12, according to the predicted position information of the Signal coding content obtaining test beacon signal generating apparatus 21 of test beacon signal, tests the wireless location information of beacon signal generating apparatus 21 according to acquisition of informations such as time of arrival (TOA) of test beacon signal, time of arrival poor (TDOA) or arrival directions (DOA).Then locating device 12 carries out parameter testing and interpretation of result statistics by the predicted position information of compare test beacon signal generating apparatus 21 and the wireless location information of test beacon signal generating apparatus 21 to multipoint location system 20.
In the preferred embodiment, user can arrange signal transmission time or the signal transmitting repetition of test beacon signal generating apparatus 21 in central controller 114, and asynchronous triggered location data processor 113 and Beacon signal generator 115 carry out work.By central controller 114 asynchronous controlling locator data processor 113 and Beacon signal generator 115 respectively, the independence between each functional module and maintainability can be maintained preferably.And user modifies by configuration informations such as central controller 114 pairs of beacon catchwords, 24 bit address codes.
The positioning system of this preferred embodiment, on the basis of the first preferred embodiment, by the setting of differential GPS antenna, Clock Card and omnidirectional antenna, further ensures stability and the reliability of predicted position information generation; Can be configured each running parameter of Beacon signal generator by central controller, the flexibility that the system that ensure that uses; The functional independence of all modules also ensure that the maintainability of system.
The specific works principle of positioning system of the present utility model is described below by a specific embodiment.
One, the gps signal receiver of the test beacon signal generating apparatus of positioning system receives satellite almanac data and ground difference base station correction parameter by differential GPS antenna; Gps signal receiver uses detuner and demoder to carry out decoding record to satellite almanac data and correction parameter subsequently, and according to satellite almanac data and ground difference base station correction parameter, calculate the positional information of the test beacon signal generating apparatus of multiple different time points, can be recorded as:
{x(i)、y(i)、t(i)}，i＝1,2….m；
Wherein m is the total quantity of sampling, the position coordinates that x (i) and y (i) is beacon signal generating apparatus, t (i) is the sampling time, and meets the incremental order of t (i) <t (i+1).
Two, the positional information of data-carrier store to the test beacon signal generating apparatus that gps signal receiver obtains carries out storage operation.
Three, central controller generates the signal transmission time of test beacon signal generating apparatus, and this signal transmission time is sent to locator data processor.
Four, after locator data processor receives signal transmission time, just the positional information that data-carrier store reads the test beacon signal generating apparatus stored is arrived, and use the positional information of Kalman filtering algorithm to the test beacon signal generating apparatus in data-carrier store to calculate, { X, Y}, the signal transmission time wherein testing beacon is later than the sampling time of the positional information of the test beacon that gps signal receiver obtains to the predicted position information of test beacon signal generating apparatus during to obtain signal transmission time.
Five, { other configuration informations to be sent such as X, Y} and beacon catchword, 24 bit address codes are sent to Beacon signal generator to the predicted position information of test beacon that generated by locator data processor of central controller.
Six, Beacon signal generator is encoded with the form of ADS-B target location message to predicted position information and other configuration informations, and carries out binary modulated process to the data after coding, thus forms test beacon signal.
Seven, Beacon signal generator is when signal transmission time, by the omnidirectional antenna of 1090MHz, the test beacon signal of generation is sent to locating device.
Eight, wireless location information { XX, YY} of beacon signal generating apparatus tested by locating device according to acquisition of informations such as test time of arrival (TOA) of beacon signal, time of arrival poor (TDOA) or arrival directions (DOA).Then by the predicted position information of compare test beacon signal generating apparatus, { { XX, YY} carry out parameter testing and interpretation of result statistics to multipoint location system to the wireless location information of X, Y} and test beacon signal generating apparatus to locating device.
The historical position of the test beacon that test beacon signal generating apparatus of the present utility model and positioning system are gathered by GPS and the accurate location of time scale information prediction signal x time beacon, and generate test beacon signal with this predicted position information, ensure that institute sends and test in beacon signal the position that the positional information of encoding represents signal x time beacon accurately, solve existing test beacon signal generating apparatus positional information sampling rate low, the technical matterss such as precision state difference, for the parameter testing of multipoint location system and interpretation of result statistics provide platform guarantee.
In sum; although the utility model discloses as above with preferred embodiment; but above preferred embodiment is also not used to limit the utility model; those of ordinary skill in the art; not departing from spirit and scope of the present utility model; all can do various change and retouching, the scope that therefore protection domain of the present utility model defines with claim is as the criterion.
Claims (10)
1. test a beacon signal generating apparatus, it is characterized in that, comprising:
Gps signal receiver, for pressing setting-up time interval, receives satellite almanac data and the correction parameter of described test beacon signal generating apparatus, and according to described satellite almanac data and correction parameter, calculates the positional information of described test beacon signal generating apparatus;
Data-carrier store, for carrying out storage operation to the positional information of described test beacon signal generating apparatus;
Locator data processor, for obtaining the signal transmission time of described test beacon signal generating apparatus, and according to the positional information of described test beacon signal generating apparatus and default prediction algorithm, the predicted position information of described test beacon signal generating apparatus when calculating described signal transmission time; The acquisition time of the positional information of wherein said test beacon signal generating apparatus is all early than the signal transmission time of described test beacon signal generating apparatus;
Beacon signal generator, for by the predicted position information coding of described test beacon signal generating apparatus, be modulated to test beacon signal; And when described signal transmission time, described test beacon signal is sent to locating device; And
Central controller, for generating the signal transmission time of described test beacon signal generating apparatus; And described locator data processor, described Beacon signal generator are triggered and configuration change;
Wherein said gps signal receiver is connected with described data-carrier store, described data-carrier store is connected with described locator data processor, described locator data processor is connected with described central controller, and described central controller is connected with described Beacon signal generator.
2. test beacon signal generating apparatus according to claim 1, it is characterized in that, described test beacon signal generating apparatus also comprises for receiving the described satellite almanac data of test beacon signal generating apparatus and the differential GPS antenna of correction parameter, and described differential GPS antenna is connected with described gps signal receiver.
3. test beacon signal generating apparatus according to claim 1, is characterized in that, described test beacon signal generating apparatus also comprises the Clock Card for providing synchronous clock to described central controller, and described Clock Card is connected with described central controller.
4. test beacon signal generating apparatus according to claim 1, it is characterized in that, described test beacon signal generating apparatus also comprises the omnidirectional antenna for described test beacon signal being sent to described locating device, and described omnidirectional antenna is connected with described Beacon signal generator.
5. test beacon signal generating apparatus according to claim 1, is characterized in that, described gps signal receiver comprise for satellite almanac data and correction parameter are carried out decode record detuner and demoder.
6. test beacon signal generating apparatus according to claim 1, it is characterized in that, described Beacon signal generator comprises the scrambler for encoding to the predicted position information of described test beacon signal generating apparatus, and the modulator for modulating test beacon signal.
7. a positioning system, is characterized in that, comprises at least one test beacon signal generating apparatus and a locating device;
Described test beacon signal generating apparatus comprises:
Gps signal receiver, for pressing setting-up time interval, receives satellite almanac data and the correction parameter of described test beacon signal generating apparatus, and according to described satellite almanac data and correction parameter, calculates the positional information of described test beacon signal generating apparatus;
Data-carrier store, for carrying out storage operation to the positional information of described test beacon signal generating apparatus;
Locator data processor, for obtaining the signal transmission time of described test beacon signal generating apparatus, and according to the positional information of described test beacon signal generating apparatus and default prediction algorithm, the predicted position information of described test beacon signal generating apparatus when calculating described signal transmission time; The acquisition time of the positional information of wherein said test beacon signal generating apparatus is all early than the signal transmission time of described test beacon signal generating apparatus;
Beacon signal generator, for by the predicted position information coding of described test beacon signal generating apparatus, be modulated to test beacon signal; And when described signal transmission time, described test beacon signal is sent to described locating device; And
Central controller, for generating the signal transmission time of described test beacon signal generating apparatus; And described locator data processor, described Beacon signal generator are triggered and configuration change;
Wherein said gps signal receiver is connected with described data-carrier store, described data-carrier store is connected with described locator data processor, described locator data processor is connected with described central controller, and described central controller is connected with described Beacon signal generator.
8. positioning system according to claim 7, it is characterized in that, described test beacon signal generating apparatus also comprises for receiving the described satellite almanac data of test beacon signal generating apparatus and the differential GPS antenna of correction parameter, and described differential GPS antenna is connected with described gps signal receiver.
9. positioning system according to claim 7, is characterized in that, described test beacon signal generating apparatus also comprises the Clock Card for providing synchronous clock to described central controller, and described Clock Card is connected with described central controller.
10. positioning system according to claim 7, it is characterized in that, described test beacon signal generating apparatus also comprises the omnidirectional antenna for described test beacon signal being sent to described locating device, and described omnidirectional antenna is connected with described Beacon signal generator.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110212969A (en) * | 2019-05-24 | 2019-09-06 | 航天科工空间工程发展有限公司 | A kind of access of low rail constellation and control system of beacon observing and controlling and gateway fusion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110212969A (en) * | 2019-05-24 | 2019-09-06 | 航天科工空间工程发展有限公司 | A kind of access of low rail constellation and control system of beacon observing and controlling and gateway fusion |
| CN110212969B (en) * | 2019-05-24 | 2021-05-28 | 航天科工空间工程发展有限公司 | Low-orbit constellation access and control system with beacon measurement and control and gateway fusion |
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