CN206541030U - The Big Dipper and gps signal converter - Google Patents
The Big Dipper and gps signal converter Download PDFInfo
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- CN206541030U CN206541030U CN201620820905.8U CN201620820905U CN206541030U CN 206541030 U CN206541030 U CN 206541030U CN 201620820905 U CN201620820905 U CN 201620820905U CN 206541030 U CN206541030 U CN 206541030U
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- generation unit
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- beidou
- satellite
- gps
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Abstract
The utility model discloses a kind of Big Dipper and gps signal converter, the technical problem to be solved is that GPS is applied to Beidou II satellite navigation communication system.The Big Dipper of the present utility model and gps signal converter, provided with Beidou II satellite signal receiving unit, connect satellitosis converting unit and time reference generation unit, satellitosis converting unit connects navigation message generation unit and ranging code generation unit, time reference generation unit connects ranging code generation unit and carrier generation unit, and navigation message generation unit, ranging code generation unit and carrier generation unit connect RF generating unit through signal synthesis unit.The utility model is compared with prior art, positioning result, speed, temporal information and the satellite motion status information of Beidou II satellite receiver position are obtained using Beidou II satellite signal receiving unit, the gps satellite signal of simulation is converted to, GPS is applied to Beidou II satellite navigation system.
Description
Technical field
The utility model is related to a kind of satellite communication equipment, and particularly a kind of Beidou II satellite navigation system is determined with the whole world
The signal conversion equipment of position system.
Background technology
Application is formally put into from 2012 end of the year Beidou II satellite navigation systems, Chinese satellite navigation application is obtained rapidly
Development, is related to the fields such as many important industries of national product, including civil aviaton, logistics, telecommunications, traffic, finance, electric power.But mesh
Preceding global position system GPS receiver occupies most of navigation terminal equipment Market, and the Big Dipper is used in all trades and professions
Two generation receiver devices substitution GPS receiver device needs a very long transient process.In this process, turned by additional
Exchange device makes GPS be communicated with the foundation of Beidou II satellite navigation system, and can only exist Beidou II navigation signal
Environment in normal work there is huge national defence value and economic value.
The content of the invention
The purpose of this utility model is to provide a kind of Big Dipper and gps signal converter, and the technical problem to be solved is that GPS connects
Receipts machine is applied to Beidou II satellite navigation communication system.
The utility model uses following technical scheme：A kind of Big Dipper and gps signal converter, provided with Beidou II satellite
Signal receiving unit, Beidou II satellite signal receiving unit connects satellitosis converting unit and time reference generation unit, defends
Star state conversion unit connects navigation message generation unit and ranging code generation unit, and time reference generation unit connects ranging code generation
Unit and carrier generation unit, navigation message generation unit, ranging code generation unit and carrier generation unit are through signal synthesis list
Member connects RF generating unit.
The band that Beidou II satellite signal receiving unit reception Beidou II satellite of the present utility model is continuously sent is sometimes
Between and positional information, frequency be 1561.098MHz satellite-signal, from satellite-signal obtain Beidou II satellite satellite
Movement state information, calculates the distance of the coordinate and the Beidou II satellite signal receiving unit that obtain Beidou II satellite, from defending
One pulse signal of generation per second is as pulse per second (PPS) in the reference time information obtained in star signal, to satellitosis converting unit
Positioning result data, the Beidou II satellite motion status information data of NMEA-0183 forms of NMEA-0183 forms are exported,
Timing pps pulse per second signal is exported to time reference generation unit.
Satellitosis converting unit of the present utility model receives the positioning knot of Beidou II satellite signal receiving unit output
Really, Beidou II satellite motion status information, calculates the Beidou II satellitosis under GPS scenes, is generated to navigation message single
Beidou II satellitosis under member output GPS scenes, the north under positioning result and GPS scenes is exported to ranging code generation unit
Struggle against two generation satellitosises.
Time reference generation unit of the present utility model receives the timing second of Beidou II satellite signal receiving unit output
Pulse signal, every millisecond of generation repetition rate is 1kHz, and dutycycle is less than 1% timed synchronization pulse signal, generated to ranging code
Unit and carrier generation unit output.
Navigation message generation unit of the present utility model receives the north under the GPS scenes that the transmission of satellitosis converting unit comes
Struggle against two generation satellitosises, the Beidou II satellite-signal navigation message under generation GPS scenes, is exported to signal synthesis unit.
Ranging code generation unit of the present utility model receives the next positioning result of satellitosis converting unit transmission and GPS
Beidou II satellitosis under scape, receives the timed synchronization pulse signal that the transmission of time reference generation unit comes, same in timing
Under the driving of step pulse signal, with the Beidou II satellitosis under positioning result and GPS scenes, the north under GPS scenes is generated
Struggle against two generation satellite ranging code signals, is exported to signal synthesis unit.
Carrier generation unit of the present utility model receives the timed synchronization pulse signal of time reference generation unit, in timing
Under the driving of synchronization pulse, the Beidou II satellite sine wave carrier signal under generation GPS scenes, to signal synthesis unit
Output.
Signal synthesis unit of the present utility model uses the Beidou II satellite ranging code signal under GPS scenes, to navigation
Text is spread, and is modulated to using binary phase shift keying mode on sine wave carrier signal, and is superimposed Doppler frequency shift, raw
Into GPS intermediate-freuqncy signals, send to RF generating unit.
RF generating unit of the present utility model receives GPS intermediate-freuqncy signals, is converted to 1575.24MHz, produces GPS radio frequency
Signal, is sent to GPS.
Beidou II satellite signal receiving unit of the present utility model, navigation message generation unit, ranging code generation unit,
Carrier generation unit and signal synthesis unit use M300 GNSS type receivers, and satellitosis converting unit uses HG-USB30-
The very fast satellitosis change-over panel of Type B, time reference generation unit uses THTM-HCM2 type high precision clock synchronization modules, radio frequency
Generating unit uses GNRF0302 GNSS type rf boards.
The utility model compared with prior art, Beidou II satellite is obtained using Beidou II satellite signal receiving unit
Positioning result, speed, temporal information and the satellite motion status information of receiver location, are converted to the gps satellite signal of simulation,
GPS is applied to Beidou II satellite navigation system, and the environment of Beidou II satellite navigation signals can only existed
In have normal work ability.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is the input-output wave shape figure of time reference generation unit of the present utility model.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.As shown in figure 1, this practicality is new
The Big Dipper of type and gps signal converter, by Beidou II satellite signal receiving unit 101, satellitosis converting unit 102, when
Between benchmark generation unit 103, navigation message generation unit 104, ranging code generation unit 105, carrier generation unit 106, signal
Comprehensive unit 107 and RF generating unit 108 are constituted.
Beidou II satellite signal receiving unit 101 is used to receive the Beidou II for being located at the high-altitude of km more than 20,000 from the ground
Satellite（Satellite）What is continuously sent carries time and positional information, the radio signal that frequency is 1561.098MHz（Satellite is believed
Number）.
The satellite motion status information that the navigation message in signal obtains Beidou II satellite is parsed from satellite-signal.
Satellite motion status information is Beidou II Satellite system time, ephemeris, almanac, the corrected parameter of satellite clock, aeronautical satellite
Health status and ionospheric delay model parameter.
The coordinate and Beidou II satellite to observation station for obtaining Beidou II satellite are calculated from satellite-signal（Beidou II
DVB, Beidou II satellite signal receiving unit 101）Distance.
Calculate by below equation group (《GPS principles and application（The second edition）》Page 39,（It is beautiful）Kapp is blue,（It is beautiful）He Jiadi
Chief editor, bandit's bright red is translated, Electronic Industry Press, in August, 2012) calculate Beidou II satellite receiver position：
（1）
Formula（1）In, Xr、Yr、ZrFor Beidou II satellite signal receiving unit 101（Receiver ECEF, the earth's core body-fixed coordinate system
System）Three-dimensional location coordinates, Xi、Yi、ZiFor the three-dimensional location coordinates of Beidou II satellite,dTrFor receiver clock-offsets, riTo defend
Star is to the geometric distance of receiver, psriThe pseudorange measured for receiver, i=1,2,3,4, c are the light velocity, TionoFor ionosphere delay
Error, TtropFor tropospheric delay error, TrelavFor relative error,dTsvFor Beidou II satellite clock correction, RnoiseFor receiver
The range deviation that internal noise is caused.
Obtain the positioning result of the Beidou II satellite receiver position（Positioning result, receiver coordinate）Afterwards, from satellite
One pulse signal of generation per second is as pulse per second (PPS) in the reference time information obtained in signal.To satellitosis converting unit
The positioning result data of 102 output NMEA-0183 forms, the Beidou II satellite motion status information number of NMEA-0183 forms
According to the output timing pps pulse per second signal of time reference generation unit 103.
Satellitosis converting unit 102 receives the positioning result of the output of Beidou II satellite signal receiving unit 101, the Big Dipper
Two generation satellite motion status informations.Calculate the Beidou II satellitosis under GPS scenes.It is defeated to navigation message generation unit 104
The Beidou II satellitosis gone out under GPS scenes, the north under positioning result and GPS scenes is exported to ranging code generation unit 105
Struggle against two generation satellitosises.
Time reference generation unit 103 receives the timing pulse per second (PPS) letter of the output of Beidou II satellite signal receiving unit 101
Number, the signal is to produce a pulse signal by time reference is per second, while every millisecond of generation repetition rate is 1kHz, dutycycle
Timed synchronization pulse signal less than 1%, signal type is square wave.To ranging code generation unit 105 and carrier generation unit 106
Output.As shown in Fig. 2 time reference generation unit 103 receives the timing second of the output of Beidou II satellite signal receiving unit 101
Pulse signal, compared with the timed synchronization pulse signal that time reference generation unit 103 is produced, time reference and the north of receiver
The two generation satellite times that struggle against keep strictly consistent.
Navigation message generation unit 104 receives the Beidou II under the GPS scenes that the transmission of satellitosis converting unit 102 comes
Satellitosis, the Beidou II satellite-signal under GPS scenes is generated according to form as defined in GPS interface standard IS-GPS-200F
Navigation message, is exported to signal synthesis unit 107.Beidou II satellite-signal navigation message under GPS scenes connects to meet GPS
Mouth standard IS-GPS-200F gps navigation message data.
Ranging code generation unit 105 receives satellitosis converting unit 102 and transmitted under the positioning result and GPS scenes come
Beidou II satellitosis, receives time reference generation unit 103 and transmits the timed synchronization pulse signal of coming.In Timing Synchronization arteries and veins
Under the driving for rushing signal, with the Beidou II satellitosis under positioning result and GPS scenes, according to GPS interface standard IS-GPS-
Beidou II satellite ranging code signal under form as defined in 200F, generation GPS scenes, is exported to signal synthesis unit 107.
Beidou II satellite ranging code signal under GPS scenes is the Pseudo-Random Noise Code PRN that satellitosis converting unit 102 is specified
The thick catch code L1 C/A code signals of GPS L1 carrier waves of (pseudo random noise code).
Carrier generation unit 106 receives the timed synchronization pulse signal of time reference generation unit 103, in Timing Synchronization arteries and veins
Under the driving for rushing signal, according to form as defined in GPS interface standard IS-GPS-200F, the Beidou II under generation GPS scenes is defended
Star carrier signal, is exported to signal synthesis unit 107.Beidou II satellite carrier signal under GPS scenes is sampled for sine wave
Signal, frequency is 4.092MHz, and sample rate is 160MHz.
Signal synthesis unit 107 receives the Beidou II satellite under the GPS scenes that the transmission of navigation message generation unit 104 comes
Signal navigation message（Navigation message）, receive the Beidou II satellite survey under the GPS scenes that the transmission of ranging code generation unit 105 comes
Away from code signal, the Beidou II satellite carrier signal under the GPS scenes that the transmission of carrier generation unit 106 comes is received.Use GPS
Beidou II satellite ranging code signal under scape, is spread to navigation message, is adjusted using binary phase shift keying BPSK modes
On the sine wave signal for making the generation of carrier generation unit 106, and Doppler frequency shift is superimposed, generates GPS intermediate-freuqncy signals, send extremely
RF generating unit 108.
RF generating unit 108 receives signal synthesis unit 107 and transmits the GPS intermediate-freuqncy signals of coming, and is converted to
1575.24MHz, produces GPS radio-frequency signal, is sent to GPS.
In the present embodiment, Beidou II satellite signal receiving unit 101, navigation message generation unit 104, ranging code generation
Unit 105, carrier generation unit 106 and signal synthesis unit 107 are using Shanghai ComNav Satellite Navigation Technology Co., Ltd.
M300 GNSS type receivers, satellitosis converting unit 102 is using Beijing Xing Yuan Beidou navigation technologies Co., Ltd
The very fast satellitosis change-over panel of HG-USB30-B types, time reference generation unit 103 is using the golden promise letter limited public affairs of high-tech in Chengdu
The THTM-HCM2 type high precision clock synchronization modules of department, RF generating unit 108 uses Shanghai Yu Zhi telecom technology co., ltds
GNRF0302 GNSS type rf boards.
Claims (1)
1. a kind of Big Dipper and gps signal converter, it is characterised in that：The Big Dipper is provided with Beidou II with gps signal converter
Satellite signal receiving unit (101), Beidou II satellite signal receiving unit (101) connect satellitosis converting unit (102) and
Time reference generation unit (103), satellitosis converting unit (102) connects navigation message generation unit (104) and ranging code life
Into unit (105), time reference generation unit (103) connects ranging code generation unit (105) and carrier generation unit (106), leads
Avionics text generation unit (104), ranging code generation unit (105) and carrier generation unit (106) are through signal synthesis unit (107)
Connect RF generating unit (108)；The Beidou II satellite signal receiving unit (101), navigation message generation unit (104),
Ranging code generation unit (105), carrier generation unit (106) and signal synthesis unit (107) use M300GNSS type receivers,
Satellitosis converting unit (102) uses the very fast satellitosis change-over panel of HG-USB30-B types, time reference generation unit (103)
Using THTM-HCM2 type high precision clock synchronization modules, RF generating unit (108) uses GNRF0302GNSS type rf boards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620820905.8U CN206541030U (en) | 2016-08-01 | 2016-08-01 | The Big Dipper and gps signal converter |
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|---|---|---|---|
| CN201620820905.8U CN206541030U (en) | 2016-08-01 | 2016-08-01 | The Big Dipper and gps signal converter |
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| CN206541030U true CN206541030U (en) | 2017-10-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093971A (en) * | 2016-08-01 | 2016-11-09 | 深圳市星芯趋势科技有限责任公司 | The Big Dipper and gps signal transducer |
| CN113703013A (en) * | 2021-05-18 | 2021-11-26 | 中国电信股份有限公司 | Signal processing method, device, system and computer readable storage medium |
-
2016
- 2016-08-01 CN CN201620820905.8U patent/CN206541030U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093971A (en) * | 2016-08-01 | 2016-11-09 | 深圳市星芯趋势科技有限责任公司 | The Big Dipper and gps signal transducer |
| CN106093971B (en) * | 2016-08-01 | 2019-01-22 | 深圳市星芯趋势科技有限责任公司 | Beidou and GPS signal converter |
| CN113703013A (en) * | 2021-05-18 | 2021-11-26 | 中国电信股份有限公司 | Signal processing method, device, system and computer readable storage medium |
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