CN101408606B - Multiple-mode positioning signal source system - Google Patents
Multiple-mode positioning signal source system Download PDFInfo
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- CN101408606B CN101408606B CN2008102033875A CN200810203387A CN101408606B CN 101408606 B CN101408606 B CN 101408606B CN 2008102033875 A CN2008102033875 A CN 2008102033875A CN 200810203387 A CN200810203387 A CN 200810203387A CN 101408606 B CN101408606 B CN 101408606B
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Abstract
The invention discloses a system which can be used not only as a positioning signal emission source but also as positioning signal synchronization under the high dynamic environment. The system comprises main functional modules of at least a GPS/Northern Dipper/Galileo/GLONASS signal receiving unit, a positioning signal source signal emitting unit, a transceiving master control platform, reception control software and the like, and the main functional modules are integrated into a system unity of a multi-mode positioning signal source. The 1PPS of the receiving unit is prospectively integrated with the design of the positioning signal source, and the time synchronization problem of the multi-mode positioning signal source is solved in the system; in virtue of the transceiving master control platform, the current coordinate of the positioning signal source can be input in real time, and the signal can be launched or reflected by data processing. The system is a new method of the positioning signal source technology in the expanding research and system design in the space navigation positioning field.
Description
Technical field:
The invention belongs to the technical field of spacecraft independent navigation location, specifically be meant a kind of system that can receive processing again as signal as the positioning signal emissive source.The system of this multiple-mode positioning signal source is applicable to that ground fixed installation, airborne/ball carry/environment location-independent system or co-located systems down such as spaceborne, near space, finish flexible and multimodal navigator fix application.
Background technology:
In recent ten years, people have done many explorations aspect pseudo satellite, pseudolite, have developed validity, reliability, integrality and accuracy that multiple positioning signal source device is used to strengthen the GPS location.Land and some precision applications and in subterranean tunnel, use that positioning signal source is located separately etc. as the deformation monitoring of dam and bridge, airfield approach.During particularly GPS and inertial navigation technology (INS) integrated positioning is used in recent years, but under some special conditions of work since gps signal can losing lock or loses, make the navigation and positioning accuracy of GPS/INS combination reduce rapidly, can address this problem by the method that increases pseudo satellite, pseudolite.
In the development and application of pseudo satellite, pseudolite, still be confined to pseudo satellite, pseudolite at present and can produce similar gps satellite signal form, be used for simulation or realize the positioning signal source location, emissive power is very little.Aspect the terminating machine exploitation with navigation locating function, many information technology companies need the signal imitation function of positioning signal source.Adopting pseudo satellite, pseudolite to strengthen in the location, main dependence is provided with the PRN value of positioning signal source and associating and signal enhancing that emissive power realizes positioning system, optimization geometrical property, the degree of stability of raising bearing accuracy and system.Therefore, present GPS pseudo satellite, pseudolite is the analog transmissions source of a similar gps signal.
The proposition of GPS pseudo satellite, pseudolite technology also is a laboratory procedure of proving the GPS positioning principle, because after GPS issue and the successful Application, GPS pseudo satellite, pseudolite technology also has only several family units to go in for the study.Though the multiple-mode positioning signal source that the inventive method proposed is having certain experience to draw on aspect the generation of gps signal, exist more innovative point, as the time synchronized that realizes the GPS/ Big Dipper/Galileo/GLONASS multi-mode Signal Processing, 1PPS pulse per second (PPS) etc.In the China that greatly develops Big Dipper positioning system, propose to solve high-precision three-dimensional location in high dynamic environment and the multiple-mode positioning signal source of using as time synchronized.
Summary of the invention:
The object of the present invention is to provide a kind of system design and application process thereof of multiple-mode positioning signal source, the solution positioning signal source is used in high dynamic environment and is handled application as the signal reflex or the reception of synchronized positioning signal source.
Design method of the present invention is that main functional modules such as the integrated GPS/ Big Dipper/Galileo/GLONASS signal receiving unit, positioning signal source signal transmitter unit, transceiver master control platform, foreground Control Software are formed the transceiver system that is formed.Wherein:
(1) the GPS/ Big Dipper/Galileo/GLONASS signal receiving unit
As shown in Figure 1, in multiple-mode positioning signal source system, received processing unit 14 and formed signal receiving unit by receiving antenna 1, low noise amplifier 3, down coversion 5, high precision temperature control VCXO 6, IF down coversion 8, PRN sign indicating number decoding 9, IF carrier wave generation 10, PRN sign indicating number generation 11, tracking loop 12, navigation signal, locating information is caught, follows the tracks of and calculated to the realization satellite positioning signal after receiving antenna 1 enters into down coversion 5, IF down coversion 8 down coversions.Drawing the 1PPS pps pulse per second signal from navigation signal reception processing unit 14 carries out time synchronized in the system for digital navigation signal generation unit 15.Can realize the GPS/ Big Dipper/Galileo/GLONASS multi-mode Signal Processing by being provided with of transceiver master control platform 16.
Traditional GPS receiver is mainly to generate 10 by receiving antenna 1, low noise amplifier 3, down coversion 5, high precision temperature control VCXO 6, IF down coversion 8, IF carrier wave to form, on function, just finish the gps antenna signal reception, down coversion, catch, follow the tracks of and resolve.And the major function of the signal receiving unit in multiple-mode positioning signal source system is to take out the 1PPS pulse per second (PPS) in the received signal, the synchronous signal source of formation time in system.
(2) positioning signal source signal transmitter unit
Form positioning signal source signal transmitter unit by emitting antenna 2, power amplifier 4, high precision temperature control VCXO 6, up-conversion 7, IF up-conversion 13, digital navigation signal generation unit 15, transceiver master control platform 16, the navigator fix signal that realization is generated by transceiver master control platform 16, digital navigation signal generation unit 15, the power amplification of carrying out power amplifier 4 by the up-conversion of up-conversion 7, IF up-conversion 13 are gone out to spatial emission by emitting antenna 2 again.Realize the generation of multi-mode signal by being provided with of transceiver master control platform 16, multitask configuration and self-adaptation switchings such as the signal emission that realizes static environment by being provided with of foreground Control Software 17, the signal emission of high dynamic environment, signal Synchronization reflection.
Positioning signal source signal transmitter unit is a core of The Hardware Design, finishes the link effect of signal source emission on function, is the hardware guarantee of realizing that multitask configuration and self-adaptation are switched.
(3) transceiver master control platform
The combination of transceiver master control platform 16, foreground Control Software 17 is based upon on DSP platform and serial ports of computers alternate manners such as (all can) USB communicate by letter, and receives navigation signal and receives navigation signal that processing unit 14 transmits and carry out data processing or directly inject digital navigation signal generation unit 15 and carry out the generation of digital navigation signal.Because multiple-mode positioning signal source only need inject the accurate coordinates of position in static environment, in high dynamic environment, need to inject coordinate in real time, and finish multitask setting and self-adaptation switchings such as signal emission, signal Synchronization reflection.
Can import the current coordinate of positioning signal source in real time by transceiver master control platform, can realize the emission or the reflection of signal again by data processing, be the main body control platform that system generates multiple-mode positioning signal, injection navigation signal, control signal transmitter unit.
The combination of transceiver master control platform 16, foreground Control Software 17 is based upon on DSP platform and serial ports of computers alternate manners such as (all can) USB communicate by letter, and receives navigation signal and receives navigation signal that processing unit 14 transmits and carry out data processing or directly inject navigation signal generation unit 15 and carry out the generation of digital navigation signal.Because multiple-mode positioning signal source only need inject the accurate coordinates of position in static environment, in high dynamic environment, need to inject coordinate in real time, and finish multitask setting and self-adaptation switchings such as signal emission, signal Synchronization reflection.
Can import the current coordinate of positioning signal source in real time by transceiver master control platform, can realize the emission or the reflection of signal again by data processing, be the main body control platform that system generates multiple-mode positioning signal, injection navigation signal, control signal transmitter unit.
Innovative point of the present invention is:
(1) design method of the present invention incorporates the design of positioning signal source body with the GPS/ Big Dipper/Galileo/GLONASS signal receiving unit first, being the innovative approach of injecting positioning signal source position coordinate in real time, is that ground stationary positioned signal source applies to airborne/ball and carries/the innovation and application method of spaceborne high dynamic environment.
(2) the 1PPS pps pulse per second signal of signal receiving unit output inserts positioning signal source signal transmitter unit, realizes intrasystem time synchronized, is incorporate new fusion method of signal and time.
(3) multiple-mode positioning signal source can be realized multiple-tasks such as signal reflex, synchronized transmissions in application, is that the realization task is provided with and the innovative design method of self-adaptation switching based on the system platform of " DSP+ computing machine ".
Technique effect of the present invention:
(1) after multiple-mode positioning signal source directly injects the coordinate of position through receiving element, can realize the positioning signal emission under the dynamic environment; Emissive power is by power amplifier control, can realize tens milliwatts to watt the order of magnitude, 10 ~ 100 kilometers of signal covers.
(2) receiving element uses the 1PPS pulse per second (PPS) to carry out same step calibration in inside after receiving the GPS/ Big Dipper/Galileo/GLONASS signal, realize the accurate Calculation of time delay, the synchronous error of multiple-mode positioning signal source can be controlled at ± 50ns after some technical finesses again.
(3) the present invention is applied in the static immobilization system, can realize the high accuracy three-dimensional location, and precision is in centimetre-sized; Be applied in the dynamic positioning system, can realize the three-dimensional localization precision of decimeter grade.
Description of drawings:
Fig. 1 is the system design synoptic diagram of multiple-mode positioning signal source;
Among Fig. 1: 1---receiving antenna;
2---emitting antenna;
3---low noise amplifier;
4---power amplifier;
5---down coversion;
6---the high precision temperature control VCXO;
7---up-conversion;
8---the IF down coversion;
9---the decoding of PRN sign indicating number;
10---the IF carrier wave generates;
11---the PRN sign indicating number generates;
12---tracking loop;
13---the IF up-conversion;
14---navigation signal receives processing unit;
15---digital navigation signal generation unit;
16---transceiver master control platform;
17---the foreground Control Software;
18---computing machine.
Fig. 2 is the system diagram that multiple-mode positioning signal source is used.
Embodiment:
Consult Fig. 2, the application process of multiple-mode positioning signal source in navigation positioning system is as described below:
(1) is convenient to express, be that example (is supported the GPS/ Big Dipper/Galileo/GLONASS) with GPS, multiple-mode positioning signal source receives the signal of gps satellite, revises synchronously in positioning signal source inside and launches the class gps signal again, so just can realize incorporating gps system and as the function of signal source.
(2) after system entered duty, signal receiving unit received the high precision position signal at multiple-mode positioning signal source place, also can extract the 1PPS pps pulse per second signal simultaneously; The GPS/ Big Dipper/the Galileo/GLONASS that is provided with by transceiver master control platform generates signal and navigation signal injection signal transmitter unit, realizes multi-mode signal Processing, emission and reflection function under the situation of emissive power and signal compatibility coupling; Internal system also obtains the accurate of time synchronized and system sequence under the effect of 1PPS pulse per second (PPS).
Satellite-signal to one receiver user of (3) 3 positioning signal source reflections.In this case, optimum geometric figure (DOP minimum) is that multiple-mode positioning signal source forms an equilateral triangle.From geometric point of view, position location satellite is positioned at the overhead infinite distant place of triangle center point, and the position of receiver user is arranged on the somewhere that is made of straight line the central point of equilateral triangle and position location satellite.In this case, DOP is the function from the receiver user elevation angle that any multiple-mode positioning signal source is seen.If the elevation angle is bigger, geometric configuration approaches multiple-mode positioning signal source, receiver user and position location satellite situation point-blank, and this is a kind of limit of geometric distributions.If multiple-mode positioning signal source is positioned in the middle of position location satellite and the receiver user, Fan She signal equates with the distance that signal is directly propagated so.Be zero at the difference pseudorange of measuring Anywhere from multiple-mode positioning signal source, this special measured value is found the solution nonsensical to navigation, because its geometric vector is zero.
Claims (2)
1. multiple-mode positioning signal source system, it comprises the GPS/ Big Dipper/Galileo/GLONASS signal receiving unit, positioning signal source signal transmitter unit, transceiver master control platform (16), foreground Control Software (17) main functional modules, can can it is characterized in that as signal receiving processor again as the positioning signal emissive source:
A. described signal receiving unit is by receiving antenna (1), low noise amplifier (3), down coversion (5), high precision temperature control VCXO (6), IF down coversion (8), PRN sign indicating number decoding (9), the IF carrier wave generates (10), the PRN sign indicating number generates (11), tracking loop (12), navigation signal receives processing unit (14) and forms, satellite positioning signal enters into down coversion (5) from receiving antenna (1), catch after IF down coversion (8) down coversion, follow the tracks of and calculate locating information, draw the 1PPS pps pulse per second signal from navigation signal reception processing unit (14) and carry out time synchronized in the system for digital navigation signal generation unit (15), can realize the GPS/ Big Dipper/Galileo/GLONASS multi-mode Signal Processing by being provided with of transceiver master control platform (16);
B. described positioning signal source signal transmitter unit is by emitting antenna (2), power amplifier (4), high precision temperature control VCXO (6), up-conversion (7), IF up-conversion (13), digital navigation signal generation unit (15), transceiver master control platform (16) is formed, by transceiver master control platform (16), the navigator fix signal that digital navigation signal generation unit (15) generates, by up-conversion (7), the up-conversion of IF up-conversion (13) is carried out the power amplification of power amplifier (4) and is gone out to spatial emission by emitting antenna (2), by the generation that realizes the multi-mode signal that is provided with of transceiver master control platform (16), launch by the signal that being provided with of foreground Control Software (17) realized static environment, the signal emission of high dynamic environment, the multitask configuration and the self-adaptation of signal Synchronization reflection are switched.
2. a kind of multiple-mode positioning signal source system according to claim 1, it is characterized in that: described transceiver master control platform (16) is based upon on DSP platform and serial ports of computers or the usb communication mode with the combination of foreground Control Software (17), and the navigation signal that reception navigation signal reception processing unit (14) transmits carries out data processing or directly injects digital navigation signal generation unit (15) and carry out the generation of digital navigation signal.
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Cited By (1)
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| US8860610B2 (en) | 2011-12-06 | 2014-10-14 | Cambridge Silicon Radio Limited | Adding multi-system functionalities to legacy navigation satellite system receivers |
| CN104682985B (en) * | 2013-11-28 | 2017-11-21 | 郑州威科姆科技股份有限公司 | GNSS multimode multi-function device modules and multi-mode radio frequency receive-transmit system |
| CN105510933A (en) * | 2015-11-30 | 2016-04-20 | 中航飞机股份有限公司西安飞机分公司 | Three-system integrated satellite navigation detection equipment and detection method |
| CN107247277A (en) * | 2017-07-05 | 2017-10-13 | 京信通信系统（中国）有限公司 | GPS/ Big Dipper dual mode datas shunt, branch control system and branch control method |
| CN109493582B (en) * | 2018-09-14 | 2021-12-17 | 上海宇芯科技有限公司 | Split type big dipper data transmission terminal and big dipper long-range electric power system of checking meter |
| CN114845238B (en) * | 2022-04-20 | 2024-01-30 | 国网四川省电力公司达州供电公司 | Auxiliary positioning device for controlling drilling position of rotary drilling rig |
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