CN106093971B - Beidou and GPS signal converter - Google Patents
Beidou and GPS signal converter Download PDFInfo
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- CN106093971B CN106093971B CN201610618264.2A CN201610618264A CN106093971B CN 106093971 B CN106093971 B CN 106093971B CN 201610618264 A CN201610618264 A CN 201610618264A CN 106093971 B CN106093971 B CN 106093971B
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- beidou
- unit
- satellite
- signal
- generation unit
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a kind of Beidou and GPS signal converter, technical problems to be solved are that GPS receiver is suitable for Beidou II satellite navigation communication system.Beidou and GPS signal converter of the invention, equipped 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 present invention 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 for being converted to simulation makes GPS receiver be suitable for Beidou II satellite navigation system.
Description
Technical field
The present invention relates to a kind of satellite communication equipment, especially a kind of Beidou II satellite navigation system and global positioning system
The signal conversion equipment of system.
Background technique
Application is formally put into from 2012 end of the year Beidou II satellite navigation systems, Chinese satellite navigation application obtains rapidly
Development, is related to the fields such as many important industries, including civil aviaton, logistics, telecommunications, traffic, finance, electric power of national product.But mesh
Preceding global position system GPS receiver occupies most of navigation terminal equipment Market, and Beidou is used in all trades and professions
Two generation receiver devices replace GPS receiver device to need a very long transient process.In this process, turned by additional
Exchange device establishes GPS receiver and Beidou II satellite navigation system to communicate, and can be there is only Beidou II navigation signals
Environment in work normally have huge national defence value and economic value.
Summary of the invention
The object of the present invention is to provide a kind of Beidou and GPS signal converter, technical problems to be solved are GPS receiver
Suitable for Beidou II satellite navigation communication system.
The invention adopts the following technical scheme: a kind of Beidou and GPS signal converter, are equipped with Beidou II satellite-signal
Receiving unit, Beidou II satellite signal receiving unit connect satellitosis converting unit and time reference generation unit, satellite shape
State converting 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 connect through signal synthesis unit
RF generating unit.
Beidou II satellite signal receiving unit of the invention receive band having time that Beidou II satellite continuously issues with
Location information, frequency be 1561.098MHz satellite-signal, from satellite-signal obtain Beidou II satellite satellite motion
Status information calculates the coordinate for obtaining Beidou II satellite at a distance from Beidou II satellite signal receiving unit, believes from satellite
One pulse signal of generation per second is exported as pulse per second (PPS) to satellitosis converting unit in the reference time information obtained in number
Positioning result data, the Beidou II satellite motion status information data of NMEA-0183 format of NMEA-0183 format, Xiang Shi
Between benchmark generation unit export timing second pulse signal.
Satellitosis converting unit of the invention receives the positioning result of Beidou II satellite signal receiving unit output, north
Struggle against two generation satellite motion status informations, calculates the Beidou II satellitosis under GPS scene, exports to navigation message generation unit
Beidou II satellitosis under GPS scene exports the Beidou II under positioning result and GPS scene to ranging code generation unit
Satellitosis.
Time reference generation unit of the invention receives the timing pulse per second (PPS) of Beidou II satellite signal receiving unit output
Signal, every millisecond of generation repetition rate are 1kHz, timed synchronization pulse signal of the duty ratio less than 1%, to ranging code generation unit
It is exported with carrier generation unit.
Navigation message generation unit of the invention receives the Beidou two under the GPS scene that the transmission of satellitosis converting unit comes
For satellitosis, the Beidou II satellite-signal navigation message under GPS scene is generated, is exported to signal synthesis unit.
Ranging code generation unit of the invention receives under the positioning result and GPS scene that the transmission of satellitosis converting unit comes
Beidou II satellitosis, receiving time benchmark generation unit transmission come timed synchronization pulse signal, in Timing Synchronization arteries and veins
It rushes under the driving of signal, with the Beidou II satellitosis under positioning result and GPS scene, generates the Beidou two under GPS scene
For satellite ranging code signal, exported to signal synthesis unit.
The timed synchronization pulse signal of carrier generation unit receiving time benchmark generation unit of the invention, in Timing Synchronization
Under the driving of pulse signal, the Beidou II satellite sine wave carrier signal under GPS scene is generated, it is defeated to signal synthesis unit
Out.
Signal synthesis unit of the invention uses the Beidou II satellite ranging code signal under GPS scene, to navigation message
It is spread, is modulated on sine wave carrier signal using binary phase shift keying mode, and be superimposed Doppler frequency shift, generated
GPS intermediate-freuqncy signal, is sent to RF generating unit.
RF generating unit of the invention receives GPS intermediate-freuqncy signal, is converted to 1575.24MHz, generates GPS radio-frequency signal,
It is sent to GPS receiver.
Beidou II satellite signal receiving unit of the invention, navigation message generation unit, ranging code generation unit, carrier wave
Generation unit and signal synthesis unit use M300 GNSS type receiver, and satellitosis converting unit uses HG-USB30-B type
Very fast satellitosis change-over panel, time reference generation unit use THTM-HCM2 type high precision clock synchronization module, and radio frequency occurs
Unit uses GNRF0302 GNSS type rf board.
Compared with prior art, the present invention obtaining Beidou II satellite reception using Beidou II satellite signal receiving unit
Positioning result, speed, temporal information and the satellite motion status information that seat in the plane is set, are converted to the GPS satellite signal of simulation, make
GPS receiver is suitable for Beidou II satellite navigation system, and can be there is only in the environment of Beidou II satellite navigation signals
With the ability of normal work.
Detailed description of the invention
Fig. 1 is structural block diagram of the invention.
Fig. 2 is the input-output wave shape figure of time reference generation unit of the invention.
Specific embodiment
Invention is further described in detail with embodiment with reference to the accompanying drawing.As shown in Figure 1, Beidou of the invention
It is raw by Beidou II satellite signal receiving unit 101, satellitosis converting unit 102, time reference with GPS signal converter
At unit 103, navigation message generation unit 104, ranging code generation unit 105, carrier generation unit 106, signal synthesis unit
107 and RF generating unit 108 form.
Beidou II satellite signal receiving unit 101 is used to receive the Beidou II for being located at more than 20,000 km high-altitudes from the ground
Satellite (satellite) continuously issue with having time and location information, radio signal (satellite letter that frequency is 1561.098MHz
Number).
The satellite motion status information of Beidou II satellite is obtained from the navigation message parsed in signal in satellite-signal.
Satellite motion status information is Beidou II Satellite system time, ephemeris, almanac, the corrected parameter of satellite clock, navigation satellite
Health status and ionospheric delay model parameter.
The coordinate for obtaining Beidou II satellite and Beidou II satellite are calculated from satellite-signal to observation point (Beidou II
Satellite receiver, Beidou II satellite signal receiving unit 101) distance.
By following equation group, (" GPS principle and application (second edition) " page 39, (beauty) Kapp is blue, (beauty) He Jiadi for calculating
Chief editor, bandit's bright red are translated, Electronic Industry Press, in August, 2012) calculate Beidou II satellite receiver position:
(1)
In formula (1), 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
Geometric distance of the star to receiver, psriFor the pseudorange that receiver measures, 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
Range deviation caused by internal noise.
After obtaining the positioning result (positioning result, receiver coordinate) of the Beidou II satellite receiver position, 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
102 export the Beidou II satellite motion status information number of the positioning result data of NMEA-0183 formats, NMEA-0183 format
According to the output timing second pulse signal of time reference generation unit 103.
Satellitosis converting unit 102 receives positioning result, the Beidou that Beidou II satellite signal receiving unit 101 exports
Two generation satellite motion status informations.Calculate the Beidou II satellitosis under GPS scene.It is defeated to navigation message generation unit 104
Beidou II satellitosis under GPS scene out exports the north under positioning result and GPS scene to ranging code generation unit 105
Struggle against two generation satellitosises.
Time reference generation unit 103 receives the timing pulse per second (PPS) letter that Beidou II satellite signal receiving unit 101 exports
Number, which is by time reference one pulse signal of generation per second, while every millisecond of generation repetition rate is 1kHz, duty ratio
Timed synchronization pulse signal less than 1%, signal type are 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 that Beidou II satellite signal receiving unit 101 exports
Pulse signal, compared with the timed synchronization pulse signal that time reference generation unit 103 generates, the time reference of receiver and north
The two generation satellite times that struggle against keep strictly consistent.
Navigation message generation unit 104 receives the Beidou II under the GPS scene that the transmission of satellitosis converting unit 102 comes
Satellitosis generates the Beidou II satellite-signal under GPS scene according to format 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 scene is to meet GPS to connect
The GPS navigation message data of mouth standard IS-GPS-200F.
Ranging code generation unit 105 receives under the positioning result and GPS scene that the transmission of satellitosis converting unit 102 comes
Beidou II satellitosis, the timed synchronization pulse signal that the transmission of receiving time benchmark generation unit 103 comes.In Timing Synchronization arteries and veins
It rushes under the driving of signal, with the Beidou II satellitosis under positioning result and GPS scene, according to GPS interface standard IS-GPS-
Format as defined in 200F generates the Beidou II satellite ranging code signal under GPS scene, exports to signal synthesis unit 107.
Beidou II satellite ranging code signal under GPS scene is the Pseudo-Random Noise Code PRN that satellitosis converting unit 102 is specified
The thick catch code L1 C/A code signal of GPS L1 carrier wave of (pseudo random noise code).
The timed synchronization pulse signal of 106 receiving time benchmark generation unit 103 of carrier generation unit, in Timing Synchronization arteries and veins
It rushes under the driving of signal, according to format as defined in GPS interface standard IS-GPS-200F, the Beidou II generated under GPS scene is defended
Star carrier signal is exported to signal synthesis unit 107.Beidou II satellite carrier signal under GPS scene is sine wave sampling
Signal, frequency 4.092MHz, sample rate 160MHz.
Signal synthesis unit 107 receives the Beidou II satellite under the GPS scene that the transmission of navigation message generation unit 104 comes
Signal navigation message (navigation message), the Beidou II satellite received under the GPS scene that the transmission of ranging code generation unit 105 comes are surveyed
Away from code signal, the Beidou II satellite carrier signal under the GPS scene that the transmission of carrier generation unit 106 comes is received.Use GPS
Beidou II satellite ranging code signal under scape, spreads navigation message, uses binary phase shift keying BPSK mode tune
On the sine wave signal for making the generation of carrier generation unit 106, and it is superimposed Doppler frequency shift, generates GPS intermediate-freuqncy signal, be sent to
RF generating unit 108.
RF generating unit 108 receives the GPS intermediate-freuqncy signal that the transmission of signal synthesis unit 107 comes, and is converted to
1575.24MHz generates GPS radio-frequency signal, is sent to GPS receiver.
In the present embodiment, Beidou II satellite signal receiving unit 101, navigation message generation unit 104, ranging code are generated
Unit 105, carrier generation unit 106 and signal synthesis unit 107 are using Shanghai ComNav Satellite Navigation Technology Co., Ltd.
M300 GNSS type receiver, satellitosis converting unit 102 is using Beijing Xing Yuan Beidou navigation technology Co., Ltd
The very fast satellitosis change-over panel of HG-USB30-B type, time reference generation unit 103 believe the limited public affairs of high-tech using the promise of Chengdu gold
The THTM-HCM2 type high precision clock synchronization module of department, RF generating unit 108 use Shanghai Yu Zhi telecom technology co., ltd
GNRF0302 GNSS type rf board.
Claims (2)
1. a kind of Beidou and GPS signal converter are equipped with Beidou II satellite signal receiving unit (101), signal synthesis unit
(107) and RF generating unit (108), Beidou II satellite signal receiving unit (101) connect satellitosis converting unit (102)
With time reference generation unit (103), signal synthesis unit (107) connects RF generating unit (108), it is characterised in that: described
Satellitosis converting unit (102) connects navigation message generation unit (104) and ranging code generation unit (105), and time reference is raw
Ranging code generation unit (105) and carrier generation unit (106) are connect at unit (103), navigation message generation unit (104) is surveyed
RF generating unit (108) are connect through signal synthesis unit (107) away from code generation unit (105) and carrier generation unit (106)；
The Beidou II satellite signal receiving unit (101) receives the band having time and position that Beidou II satellite continuously issues
Information, frequency be 1561.098MHz satellite-signal, from satellite-signal obtain Beidou II satellite satellite motion state
Information calculates the coordinate for obtaining Beidou II satellite at a distance from Beidou II satellite signal receiving unit (101), believes from satellite
One pulse signal of generation per second is as pulse per second (PPS) in the reference time information obtained in number, to satellitosis converting unit
(102) positioning result data, the Beidou II satellite motion status information of NMEA-0183 format of NMEA-0183 format are exported
Data export timing second pulse signal to time reference generation unit (103)；
The positioning result of satellitosis converting unit (102) reception Beidou II satellite signal receiving unit (101) output,
Beidou II satellite motion status information calculates the Beidou II satellitosis under GPS scene, to navigation message generation unit
(104) the Beidou II satellitosis under GPS scene is exported, exports positioning result and GPS to ranging code generation unit (105)
Beidou II satellitosis under scape；
The time reference generation unit (103) receives the timing second arteries and veins of Beidou II satellite signal receiving unit (101) output
Signal is rushed, every millisecond of generation repetition rate is 1kHz, and timed synchronization pulse signal of the duty ratio less than 1% is generated to ranging code
Unit (105) and carrier generation unit (106) output；
The navigation message generation unit (104) receives the Beidou under the GPS scene that satellitosis converting unit (102) transmission comes
Two generation satellitosises generate the Beidou II satellite-signal navigation message under GPS scene, export to signal synthesis unit (107)；
The ranging code generation unit (105) receives the positioning result and GPS scene that satellitosis converting unit (102) transmission comes
Under Beidou II satellitosis, receiving time benchmark generation unit (103) transmission come timed synchronization pulse signal, timing
Under the driving of synchronization pulse, with the Beidou II satellitosis under positioning result and GPS scene, generate under GPS scene
Beidou II satellite ranging code signal is exported to signal synthesis unit (107)；
The timed synchronization pulse signal of carrier generation unit (106) the receiving time benchmark generation unit (103), it is same in timing
Under the driving of step pulse signal, the Beidou II satellite sine wave carrier signal under GPS scene is generated, to signal synthesis unit
(107) it exports；
The signal synthesis unit (107) uses the Beidou II satellite ranging code signal under GPS scene, carries out to navigation message
Spread spectrum, is modulated on sine wave carrier signal, and be superimposed Doppler frequency shift using binary phase shift keying (BPSK) mode, is generated
GPS intermediate-freuqncy signal is sent to RF generating unit (108)；
The RF generating unit (108) receives GPS intermediate-freuqncy signal, is converted to 1575.24MHz, generates GPS radio-frequency signal, hair
It is sent to GPS receiver.
2. Beidou according to claim 1 and GPS signal converter, it is characterised in that: the Beidou II satellite-signal
Receiving unit (101), navigation message generation unit (104), ranging code generation unit (105), carrier generation unit (106) and letter
Number comprehensive unit (107) uses M300GNSS type receiver, and satellitosis converting unit (102) is very fast using HG-USB30-B type
Satellitosis change-over panel, time reference generation unit (103) use THTM-HCM2 type high precision clock synchronization module, radio frequency hair
Raw unit (108) use GNRF0302GNSS type rf board.
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| CN201610618264.2A CN106093971B (en) | 2016-08-01 | 2016-08-01 | Beidou and GPS signal converter |
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| CN106093971B true CN106093971B (en) | 2019-01-22 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112305568B (en) * | 2020-09-30 | 2023-08-29 | 北京空间飞行器总体设计部 | Method for testing consistency of ranging result and ranging reference change of spacecraft |
| CN113156464A (en) * | 2021-05-10 | 2021-07-23 | 深圳国人无线通信有限公司 | Synchronous time service conversion device and method |
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102073056B (en) * | 2009-11-20 | 2012-09-26 | 郑州威科姆科技股份有限公司 | Beidou/GPS dual-system timing receiver |
| CN103901447A (en) * | 2014-03-22 | 2014-07-02 | 哈尔滨工程大学 | GPS/Beidou dual-mode navigation positioning method |
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2016
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012045261A1 (en) * | 2010-10-09 | 2012-04-12 | 东莞市泰斗微电子科技有限公司 | Timing time service method and device using a navigational satellite |
| CN203732725U (en) * | 2013-12-30 | 2014-07-23 | 南京理工大学常熟研究院有限公司 | Miniature Beidou/GPS dual-mode radio frequency module |
| CN105319563A (en) * | 2014-07-30 | 2016-02-10 | 华平信息技术股份有限公司 | Beidou satellite signal receiving system and method |
| CN104570021A (en) * | 2015-01-23 | 2015-04-29 | 桂林电子科技大学 | GPS simulation method and system based on positioning and time service of Beidou satellite |
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