CN105301603A - Gnss receiver - Google Patents
Gnss receiver Download PDFInfo
- Publication number
- CN105301603A CN105301603A CN201510852548.3A CN201510852548A CN105301603A CN 105301603 A CN105301603 A CN 105301603A CN 201510852548 A CN201510852548 A CN 201510852548A CN 105301603 A CN105301603 A CN 105301603A
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- Prior art keywords
- gnss
- board
- receiver
- gnss receiver
- decompression
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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
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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)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
A GNSS receiver comprises a first GNSS receiver board card, a second GNSS receiver board card, and a processor. The first GNSS receiver board card and the second GNSS receiver board card are electrically connected with the processor separately. The processor is used to switching the first GNSS receiver board card and the second GNSS receiver board card according to a preset work cycle, so that the first GNSS receiver board card and the second GNSS receiver board card work alternatively. As the first GNSS receiver board card and the second GNSS receiver board card work alternatively, better message solving frequency bands of different receiver board cards can be utilized to improve the overall message solving quality of a GNSS receiver, and the two receiver board cards do not need to work continuously in 24 hours, so that the service lives of the receiver board cards can be extended, the fault frequency can be reduced, and the stability of the receiver can be enhanced.
Description
Technical field
The present invention relates to a kind of GNSS receiver.
Background technology
GNSS (GlobalNavigationSatelliteSystem, GLONASS (Global Navigation Satellite System)) make a general reference all satellite navigation systems, comprise the whole world, region with strengthen, as the Galileo in the GPS of the U.S., Muscovite Glonass, Europe, the Beidou satellite navigation system of China, and relevant enhancing system.
GNSS receiver captures the signal by the satellite to be measured selected by certain satellite altitude elevation angle by its GNSS board, and follow the tracks of the operation of these satellites, convert received satellite-signal, amplify and process, solution translates the navigation message that satellite sends.The navigation message resolving mass of GNSS reception board determines navigation and positioning accuracy and the reliability of whole receiving system.In the middle of practical application, often occur that the text resolving mass of certain some frequency range (B1 and the B2 frequency range as dipper system) of some board is poor, cannot use, and other frequency ranges of other boards (L1 and the L2 frequency range as gps system) resolved data quality is stable not, so, the receiver of single board compatible cannot choose more high quality telegraph text data.In rig-site utilization often for satellite navigation system and working frequency range in a panel region preferably, select text to resolve relatively preferably a kind of board, this just compromise at present solution, actual to resolve effect still not good.In addition, if the GNSS receiver emerged in operation fault of veneer card, Signal reception will be caused to interrupt, and make system be difficult to ensure continual and steady operation.
Summary of the invention
For the deficiencies in the prior art, the present invention is intended to provide a kind of GNSS receiver solved the problems of the technologies described above.
For achieving the above object, the present invention adopts following technical scheme:
A kind of GNSS receiver, it comprises, and a GNSS receives board, the 2nd GNSS receives board and processor;
One GNSS receives board and the 2nd GNSS reception board is electrically connected process device respectively; Processor is used for switching a GNSS with the work period of presetting and receives board and the alternation of the 2nd GNSS reception board.
Preferably, processor is also for when detecting that a GNSS receives board or the 2nd GNSS reception board job failure, and correspondence switches to the 2nd GNSS reception board or a GNSS dash receiver card carries out work.
Preferably, GNSS receiver also comprises radio frequency combiner, the first gain attenuator and the second gain attenuator, the input end of radio frequency combiner connects an antennal interface, first output terminal of radio frequency combiner connects a GNSS by the first gain attenuator and receives board, and the second output terminal of radio frequency combiner connects the 2nd GNSS by the second gain attenuator and receives board; First gain attenuator and the second attenuator also distinguish connection handling device; Processor is also for regulating the first gain attenuator and the second gain attenuator respectively according to the first yield value preset and the second yield value.
Preferably, the bandwidth of radio frequency combiner is 1200 ~ 2000MHz.
Preferably, the first gain attenuator and the second gain attenuator are digital stepping adjustable attenuator, and signal frequency range is 50 ~ 6000MHz.
Preferably, processor regulates the first gain attenuator and the second gain attenuator respectively by two Serial Peripheral Interface (SPI)s.
Preferably, antennal interface is active antenna interface, and antenna power supply VCC_RF is connected with source antenna interface by an inductance L 1, also by electric capacity C1 ground connection, is also connected an electric capacity C2 between antennal interface with radio frequency combiner.
Preferably, GNSS receiver also comprises clock distributor, the input end of clock distributor connects an interface clock signal, first output terminal of clock distributor connects a GNSS dash receiver, second output terminal of clock distributor connects the 2nd GNSS dash receiver, the control end connection handling device of clock distributor, first output terminal and second output terminal of processor also for controlling clock distributor are alternately opened.
Preferably, GNSS receiver also comprises the first decompression DC converter and the second decompression DC converter, first decompression DC converter is all connected a power input interface with the input end of the second decompression DC converter, first decompression DC converter and the output terminal of the second decompression DC converter are connected a GNSS respectively and receive board and the 2nd GNSS reception board, the equal connection handling device of Enable Pin of the first decompression DC converter and the second decompression DC converter.
Preferably, processor receives board respectively by two asynchronous serial communication interfaces and a GNSS and the 2nd GNSS dash receiver sticks into row data communication.
Beneficial effect of the present invention is at least as follows:
1, a GNSS dash receiver of the present invention and the 2nd GNSS receive board alternation, thus the different more excellent text receiving board can be utilized to resolve frequency range, improve the overall text resolving mass of GNSS receiver, and two dash receivers do not need 24 hours always continuous firings, also can increase the service life, reduce failure-frequency, improve the stability of receiver.
2, the present invention is when there is job failure in a board wherein, and another receives the work that board can take over fault board at once, ensures that continuous firing stablized by receiver, and staff also can have the sufficient time to overhaul.
3, the present invention can share same antenna interface by adopting radio frequency combiner to make two GNSS receive board, without the need to increasing antennal interface in addition, not only reduce hardware quantity, also can utilize the outer casing mold of the receiver of original single board, without the need to die sinking again, reduce production cost, also reduce field erected complexity.
4, two GNSS of the present invention receive board and can share same interface clock signal, without the need to increasing interface clock signal in addition, not only reduce hardware quantity, also can utilize the outer casing mold of the receiver of original single board, without the need to die sinking again, reduce production cost, also reduce field erected complexity.
5, a GNSS reception board of the present invention and the 2nd GNSSS receive board and can share same power input interface, without the need to increasing power input interface in addition, not only reduce hardware quantity, also can utilize the outer casing mold of the receiver of original single board, without the need to die sinking again, reduce production cost, also reduce field erected complexity.In addition, adopt the first decompression DC converter and the second decompression DC converter to carry out DC decompression respectively, realize the current supply circuit independence to double reception board, when wherein power supply trouble appears in a road, can not have an impact to another road, ensure system works continuation and stability.
Accompanying drawing explanation
Fig. 1 is the circuit connection diagram of the better embodiment of GNSS receiver of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described further:
Refer to Fig. 1, the present invention relates to a kind of GNSS receiver, its better embodiment comprises a GNSS and receives board, the 2nd GNSS reception board and processor.
One GNSS receives board and the 2nd GNSS reception board is electrically connected process device respectively; Processor is used for switching a GNSS with the work period of presetting and receives board and the alternation of the 2nd GNSS reception board.
Such as, under default conditions, a GNSS reception board first works a period of time, switch to the 2nd GNSS to receive board work afterwards, so, a GNSS dash receiver and the 2nd GNSS receive board alternation, thus the different more excellent text receiving board can be utilized to resolve frequency range, improve the overall text resolving mass of GNSS receiver, and two dash receivers do not need 24 hours always continuous firings, can increase the service life yet, reduce failure-frequency, improve the stability of receiver.
In the present embodiment, processor is also for when detecting that a GNSS receives board or the 2nd GNSS reception board job failure, and correspondence switches to the 2nd GNSS reception board or a GNSS dash receiver card carries out work.So, when job failure appears in a board wherein, another receives the work that board can take over fault board at once, ensures that continuous firing stablized by receiver, and staff also can have the sufficient time to overhaul.
The text that processor and a GNSS receive Data communication principle between board or the 2nd GNSS dash receiver, a GNSS receives board or the 2nd GNSS dash receiver resolves principle can be known by prior art, repeats no more.
Preferably, it is that GPS receives board that a GNSS receives board, and it is that Beidou satellite navigation receives board, to resolve advantage in conjunction with different system board that the 2nd GNSS receives board.In other embodiments, a GNSS dash receiver and the 2nd GNSS receive the reception board that board also can be same navigational system.
In the present embodiment, GNSS receiver also comprises radio frequency combiner, the first gain attenuator and the second gain attenuator, the input end of radio frequency combiner connects an antennal interface, first output terminal of radio frequency combiner connects a GNSS by the first gain attenuator and receives board, and the second output terminal of radio frequency combiner connects the 2nd GNSS by the second gain attenuator and receives board.First gain attenuator and the second attenuator also distinguish connection handling device; Processor, also for regulating the first gain attenuator and the second gain attenuator respectively according to the first yield value preset and the second yield value, decays to respectively by the first gain attenuator and the second gain attenuator the signal that an applicable GNSS receives board and the process of the 2nd GNSS reception board to make radiofrequency signal.
The present invention can share same antenna interface by adopting radio frequency combiner to make two GNSS receive board, without the need to increasing antennal interface in addition, not only reduce hardware quantity, also can utilize the outer casing mold of the receiver of original single board, without the need to die sinking again, reduce production cost, also reduce field erected complexity.
Preferably, the bandwidth of radio frequency combiner is 1200 ~ 2000MHz, to meet all satellite constellation band operation frequency ranges.
Preferably, the first gain attenuator and the second gain attenuator are digital stepping adjustable attenuator, and signal frequency range is 50 ~ 6000MHz, support the signal frequency range of prime power combiner device input, total adjustable gain scope 31dB, stepping accuracy 1dB.
Preferably, processor controls the first gain attenuator and the second gain attenuator respectively by two Serial Peripheral Interface (SPI)s.
Preferably, antennal interface is active antenna interface, and antenna power supply VCC_RF is connected with source antenna interface by an inductance L 1, also by electric capacity C1 ground connection, is also connected an electric capacity C2 between antennal interface with radio frequency combiner.Wherein, inductance L 1 is for realizing isolation effect, and electric capacity C1 is used for decoupling, thus absorbs power supply noise, promotes power good.Electric capacity C2 plays AC coupling effect, inputs to radio frequency combiner to avoid supply voltage.
In the present embodiment, GNSS receiver also comprises clock distributor, the input end of clock distributor connects an interface clock signal, first output terminal of clock distributor connects a GNSS dash receiver, second output terminal of clock distributor connects the 2nd GNSS dash receiver, the control end connection handling device of clock distributor, first output terminal and second output terminal of processor also for controlling clock distributor are alternately opened.So, two GNSS receive board and can share same interface clock signal, without the need to increasing interface clock signal in addition, not only reduce hardware quantity, also can utilize the outer casing mold of the receiver of original single board, without the need to die sinking again, reduce production cost, also reduce field erected complexity.
Preferably, the clock frequency 10 ~ 52MHz of clock distributor, the driving element isolation of two-way output terminal of clock, reduce connect mutual interference between peripheral hardware.
In the present embodiment, GNSS receiver also comprises the first decompression DC converter and the second decompression DC converter, first decompression DC converter is all connected a power input interface with the input end of the second decompression DC converter, first decompression DC converter and the output terminal of the second decompression DC converter are connected a GNSS respectively and receive board and the 2nd GNSS reception board, the equal connection handling device of Enable Pin of the first decompression DC converter and the second decompression DC converter.So, one GNSS receives board and the 2nd GNSS reception board can share same power input interface, without the need to increasing power input interface in addition, not only reduce hardware quantity, also can utilize the outer casing mold of the receiver of original single board, without the need to die sinking again, reduce production cost, also reduce field erected complexity.In addition, adopt the first decompression DC converter and the second decompression DC converter to carry out DC decompression respectively, realize the current supply circuit independence to double reception board, when wherein power supply trouble appears in a road, can not have an impact to another road, ensure system works continuation and stability.
Preferably, processor receives board respectively by two asynchronous serial communication interfaces and a GNSS and the 2nd GNSS dash receiver sticks into row data communication, to realize the independent glitch-free effect of data link.
" electric connection " that relate in the present invention there is electric signal transmission between finger element, be not limited to direct connection physically, such as, can be indirectly connected by wire, also can, by other elements as resistance, electric capacity connect indirectly, also can be directly connected by scolding tin or plug-in mounting.
" first ", " second " that relate in the present invention etc. only play the effect distinguishing different parts, do not play differentiation order.
For a person skilled in the art, according to technical scheme described above and design, other various corresponding change and distortion can be made, and all these change and distortion all should belong within the protection domain of the claims in the present invention.
Claims (10)
1. a GNSS receiver, is characterized in that: it comprise the one GNSS receive board,
2nd GNSS receives board and processor;
One GNSS receives board and the 2nd GNSS reception board is electrically connected process device respectively;
Processor is used for switching a GNSS with the work period of presetting and receives board and the alternation of the 2nd GNSS reception board.
2. GNSS receiver as claimed in claim 1, it is characterized in that: processor is also for when detecting that a GNSS receives board or the 2nd GNSS reception board job failure, and correspondence switches to the 2nd GNSS reception board or a GNSS dash receiver card carries out work.
3. GNSS receiver as claimed in claim 1, it is characterized in that: GNSS receiver also comprises radio frequency combiner, the first gain attenuator and the second gain attenuator, the input end of radio frequency combiner connects an antennal interface, first output terminal of radio frequency combiner connects a GNSS by the first gain attenuator and receives board, and the second output terminal of radio frequency combiner connects the 2nd GNSS by the second gain attenuator and receives board; First gain attenuator and the second attenuator also distinguish connection handling device; Processor is also for regulating the first gain attenuator and the second gain attenuator respectively according to the first yield value preset and the second yield value.
4. GNSS receiver as claimed in claim 3, is characterized in that: the bandwidth of radio frequency combiner is 1200 ~ 2000MHz.
5. GNSS receiver as claimed in claim 3, it is characterized in that: the first gain attenuator and the second gain attenuator are digital stepping adjustable attenuator, signal frequency range is 50 ~ 6000MHz.
6. GNSS receiver as claimed in claim 3, is characterized in that: processor regulates the first gain attenuator and the second gain attenuator respectively by two Serial Peripheral Interface (SPI)s.
7. GNSS receiver as claimed in claim 3, it is characterized in that: antennal interface is active antenna interface, antenna power supply VCC_RF is connected with source antenna interface by an inductance L 1, also by electric capacity C1 ground connection, is also connected an electric capacity C2 between antennal interface with radio frequency combiner.
8. the GNSS receiver according to any one of claim 1 to 7, it is characterized in that: GNSS receiver also comprises clock distributor, the input end of clock distributor connects an interface clock signal, first output terminal of clock distributor connects a GNSS dash receiver, second output terminal of clock distributor connects the 2nd GNSS dash receiver, the control end connection handling device of clock distributor, first output terminal and second output terminal of processor also for controlling clock distributor are alternately opened.
9. GNSS receiver as claimed in claim 1, it is characterized in that: GNSS receiver also comprises the first decompression DC converter and the second decompression DC converter, first decompression DC converter is all connected a power input interface with the input end of the second decompression DC converter, first decompression DC converter and the output terminal of the second decompression DC converter are connected a GNSS respectively and receive board and the 2nd GNSS reception board, the equal connection handling device of Enable Pin of the first decompression DC converter and the second decompression DC converter.
10. GNSS receiver as claimed in claim 1, is characterized in that: processor receives board respectively by two asynchronous serial communication interfaces and a GNSS and the 2nd GNSS dash receiver sticks into row data communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510852548.3A CN105301603A (en) | 2015-11-27 | 2015-11-27 | Gnss receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510852548.3A CN105301603A (en) | 2015-11-27 | 2015-11-27 | Gnss receiver |
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| Publication Number | Publication Date |
|---|---|
| CN105301603A true CN105301603A (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510852548.3A Pending CN105301603A (en) | 2015-11-27 | 2015-11-27 | Gnss receiver |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974445A (en) * | 2016-06-08 | 2016-09-28 | 广东欧珀移动通信有限公司 | Global satellite navigation system (GNSS) of mobile terminal and mobile terminal |
| CN106093990A (en) * | 2016-06-08 | 2016-11-09 | 广东欧珀移动通信有限公司 | The GPS GNSS system of mobile terminal and mobile terminal |
| CN107395265A (en) * | 2017-07-20 | 2017-11-24 | 中测新图(北京)遥感技术有限责任公司 | Positioning information transmitting method and device, method of reseptance and device, Transmission system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974445A (en) * | 2016-06-08 | 2016-09-28 | 广东欧珀移动通信有限公司 | Global satellite navigation system (GNSS) of mobile terminal and mobile terminal |
| CN106093990A (en) * | 2016-06-08 | 2016-11-09 | 广东欧珀移动通信有限公司 | The GPS GNSS system of mobile terminal and mobile terminal |
| CN106093990B (en) * | 2016-06-08 | 2017-09-29 | 广东欧珀移动通信有限公司 | The GPS GNSS system and mobile terminal of mobile terminal |
| CN105974445B (en) * | 2016-06-08 | 2018-01-19 | 广东欧珀移动通信有限公司 | The GPS GNSS system and mobile terminal of mobile terminal |
| CN107395265A (en) * | 2017-07-20 | 2017-11-24 | 中测新图(北京)遥感技术有限责任公司 | Positioning information transmitting method and device, method of reseptance and device, Transmission system |
| CN107395265B (en) * | 2017-07-20 | 2020-05-29 | 中测新图(北京)遥感技术有限责任公司 | Positioning information sending method and device, positioning information receiving method and device, and transmission system |
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Application publication date: 20160203 |