CN209545592U - Short message check-in signal Doppler frequency compensation control system under high dynamic - Google Patents
Short message check-in signal Doppler frequency compensation control system under high dynamic Download PDFInfo
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- CN209545592U CN209545592U CN201821202093.6U CN201821202093U CN209545592U CN 209545592 U CN209545592 U CN 209545592U CN 201821202093 U CN201821202093 U CN 201821202093U CN 209545592 U CN209545592 U CN 209545592U
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Abstract
The utility model discloses short message check-in signal Doppler frequency compensation control systems under a kind of high dynamic, including frequency word converting unit, frequency word converting unit generates unit with inbound pseudo-code respectively and inbound IF carrier generates unit and connect, the output that the inbound pseudo-code generates unit generates unit with inbound text again and connect, BPSK modulation unit is successively passed through in the output that inbound text generates the output of unit and inbound IF carrier generates unit, transmitting antenna is transmitted a signal to through up-conversion transmission channel after DAC unit and bandpass filtering unit, the utility model solves the problems, such as to cause inbound to fail due to the influence of Doppler shift when equipment short message inbound existing in the prior art.
Description
Technical field
The utility model belongs to Beidou satellite navigation technology field, and in particular to short message check-in signal under a kind of high dynamic
Doppler frequency compensation control system.
Background technique
The Beidou satellite navigation system of China's independent development is divided into RNSS business and RDSS business, and wherein RDSS business is whole
Occupy critically important status in a system.It is mainly used for the fields such as ground rescue, data communication, monitoring position, in the military and people
There is long-range application prospect with direction.
Under the high-speed applications environment of missile-borne, due to the needs of carrier practical application, Beidou terminal inside it is installed
Equipment devises the short message transceiver module in RDSS, can complete the satellite intercommunication of carrier and ground command system.
Inbound communication, after being forwarded by overhead satellites, quilt are wherein emitted by the short message module in the terminal device on carrier
Dipper system ground station reception；Emit by the parsing and judgement of earth station, then from earth station to overhead satellites, then by defending in the air
It is received after star forwarding by ground command system.This completes the carrier information processes that command system transmits to the ground.
It completes to transmit information to bearer user machine in a like fashion on the contrary, ground command system can also be adopted.
Utility model content
The purpose of the utility model is to provide short message check-in signal Doppler frequency compensation control systems under a kind of high dynamic
System causes inbound failure due to the influence of Doppler shift when solving equipment short message inbound existing in the prior art
Problem.
The utility model is the technical scheme adopted is that short message check-in signal Doppler frequency compensation controls under high dynamic
System, including frequency word converting unit, unit is generated with inbound pseudo-code respectively for frequency word converting unit and inbound IF carrier produces
Raw unit connection, the output that the inbound pseudo-code generates unit generate unit with inbound text again and connect, and inbound text generates single
BPSK modulation unit, DAC unit and bandpass filtering are successively passed through in the output that the output of member and inbound IF carrier generate unit
Transmitting antenna is transmitted a signal to through up-conversion transmission channel after unit.
The utility model is also characterized by
Inbound pseudo-code generates the code Doppler frequency compensation value that unit is exported according to the frequency word converting unit, in addition
The corresponding code clock reference frequency word of 4.08MHz, the code clock frequency word after obtaining transmitting Doppler frequency compensation, then by code
Clock frequency word is input to numerically-controlled oscillator NCO, obtains a yard clock signal, and generate pseudo-code sequence using code generator.
Inbound text generate unit by inbound pseudo-code generate unit generate code clock signal through 255 frequency dividing after be converted into
Information of standing text, inbound communication text are generated after the pseudo-code sequence that unit generates carries out XOR operation with the inbound pseudo-code and are inputted
To BPSK modulation unit.
Inbound IF carrier generates the carrier Doppler frequency offset that unit is exported according to the frequency word converting unit,
In addition the corresponding frequency word of IF frequency, the IF signal frequency word after obtaining transmitting Doppler frequency compensation, it then will be in this
Frequency signal frequency word is input to carrier wave NCO, obtains emission medium-frequency signal, which is input to BPSK modulation unit.
The analog if signal that the DAC unit exports is carried out up-conversion, filtering and power and put by up-conversion transmission channel
Greatly, transmitting antenna is given.
BPSK modulation unit generates the transmitting pseudo-code sequence of unit generation in transmitting in numeric field, using inbound pseudo-code
The emission medium-frequency signal that frequency carrier-generation unit generates carries out BPSK modulation.
The intermediate-freuqncy signal with BPSK modulation that DAC unit exports BPSK modulation unit carries out digital-to-analogue conversion, and carries out
Bandpass filtering obtains continuous analog if signal.
The utility model has the beneficial effects that short message check-in signal Doppler frequency compensation control system under high dynamic,
The transmitting signal producing method of short message transceiver is adjusted, inbound pseudo-code generates unit and converts list according to the frequency word
The code Doppler frequency compensation value of member output, in addition the corresponding code clock reference frequency word of 4.08MHz, obtains transmitting Doppler's frequency
The compensated code clock frequency word of rate, is then input to numerically-controlled oscillator NCO for code clock frequency word, obtains a yard clock letter
Number, and pseudo-code sequence is generated using code generator, while inbound text generates unit and inbound pseudo-code is generated the code that unit generates
Clock signal is converted into inbound communication text after 255 frequency dividings, and inbound communication text and the inbound pseudo-code generate unit and generate
Pseudo-code sequence carry out XOR operation after be input to BPSK modulation unit, with this solve the inbound as caused by Doppler shift lose
Lose problem.
Detailed description of the invention
Fig. 1 is that short message check-in signal Doppler frequency compensation Control system architecture is illustrated under the utility model high dynamic
Figure；
Fig. 2 is tested using short message check-in signal Doppler frequency compensation Control system simulation under the utility model high dynamic
Card scheme composition schematic diagram.
In figure, 1. frequency word converting units, 2. inbound pseudo-codes generate unit, and 3. inbound IF carriers generate unit, and 4. enter
Text of standing generates unit, 5.BPSK modulation unit, 6.DAC unit, 7. bandpass filtering units, 8. up-conversion transmission channels, 9. hairs
Penetrate antenna, 10. numerically-controlled oscillator NCO, 11. carrier wave NCO, 12. yards of generators.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
Short message check-in signal Doppler frequency compensation control system under the utility model high dynamic, structure as shown in Figure 1,
Including frequency word converting unit 1, unit 2 is generated with inbound pseudo-code respectively for frequency word converting unit 1 and inbound IF carrier generates
Unit 3 connects, and the output that inbound pseudo-code generates unit 2 generates unit 4 with inbound text again and connect, and inbound text generates unit 4
Output and inbound IF carrier generate unit 3 output successively pass through BPSK modulation unit 5, DAC unit 6 and bandpass filtering
Transmitting antenna 9 is transmitted a signal to through up-conversion transmission channel 8 after unit 7.
Inbound pseudo-code generates the code Doppler frequency compensation value that unit 2 is exported according to the frequency word converting unit 1, in addition
The corresponding code clock reference frequency word of 4.08MHz, the code clock frequency word after obtaining transmitting Doppler frequency compensation, then by code
Clock frequency word is input to numerically-controlled oscillator NCO10, obtains a yard clock signal, and generate pseudo-code sequence using code generator 12
Column.
Inbound text generates unit 4 and converts the code clock signal that inbound pseudo-code generation unit 2 generates to after 255 frequency dividings
After inbound communication text, inbound communication text and the inbound pseudo-code generate the pseudo-code sequence progress XOR operation that unit 2 generates
It is input to the BPSK modulation unit 5.
Inbound IF carrier generates unit 3 and is compensated according to the carrier Doppler frequency that the frequency word converting unit 1 exports
Value, in addition the corresponding frequency word of IF frequency, the IF signal frequency word after obtaining transmitting Doppler frequency compensation, then should
IF signal frequency word is input to carrier wave NCO11, obtains emission medium-frequency signal, which is input to the BPSK tune
Unit 5 processed.
The analog if signal that up-conversion transmission channel 8 exports DAC unit 6 carries out up-conversion, filtering and power amplification,
Give transmitting antenna 9.
BPSK modulation unit 5 generates the transmitting pseudo-code sequence of the generation of unit 2 to described in numeric field, using inbound pseudo-code
The emission medium-frequency signal that emission medium-frequency carrier-generation unit 3 generates carries out BPSK modulation.
The intermediate-freuqncy signal with BPSK modulation that DAC unit 6 exports BPSK modulation unit 5 carries out digital-to-analogue conversion, goes forward side by side
Row bandpass filtering obtains continuous analog if signal.
The utility model is by multi-party coordination and discusses, determines the high dynamic multi-beam north developed using University of Science and Technology for National Defence
The two generation RDSS simulators that struggle against are verified, and can use channel simulator realization to the working performance of high dynamic short message transceiver
Verifying, as shown in Figure 2:
RDSS signal imitation source: capture, tracking and the data demodulation of the main simulation for completing exit signal and check-in signal.
Wherein, exit signal is dynamically simulated and (is dynamically completed by channel simulator) without carrier, and check-in signal receives processing unit
Doppler range be configured according to the actual parameter of real system earth station inbound receiver, can just test in this way
Whether the Doppler Compensation Method for demonstrate,proving short message transceiver is effective.
High dynamic channel simulator: it is mainly made of, has distinguished outbound channel analogue unit and inbound channel analogue unit
The distance of pairs of exit signal and check-in signal, speed simulation.
The specific course of work is as follows:
Step 1 generates unit generation exit signal first with the exit signal in RDSS signal imitation source, which is to defend
Star emits the signal at output port, does not consider signal dynamics effect；
Step 2, the outbound channel analogue unit that above-mentioned signal is given to high dynamic channel simulator are realized to carrier movement
Simulation, including distance, speed, channel parameter etc.；
The high dynamic signal that step 3, high dynamic short message transceiver to channel simulator export is generated with how general
The inbound for strangling frequency meter precompensation emits signal, and gives the inbound channel analogue unit of signal simulator；
The inbound channel analogue unit reception of step 4, channel simulator is with the inbound hair of Doppler frequency table precompensation
Signal is penetrated, realizes simulation, including distance, speed, channel parameter etc. to inbound channel, and will be by entering after inbound channel
The check-in signal that signal of standing gives signal imitation source receives processing unit, realizes to the capture of check-in signal, tracking and data solution
It adjusts；
If the check-in signal that the inbound channel analogue unit of step 5, channel simulator receives is consistent with default scene,
Then prove that the check-in signal Doppler frequency precompensation method of short message transceiver is effective.
Claims (4)
1. short message check-in signal Doppler frequency compensation control system under high dynamic, which is characterized in that converted including frequency word
Unit (1), frequency word converting unit (1) generates unit (2) with inbound pseudo-code respectively and inbound IF carrier generates unit (3) even
It connects, the output that the inbound pseudo-code generates unit (2) generates unit (4) with inbound text again and connect, and inbound text generates unit
(4) output that output and inbound IF carrier generate unit (3) successively pass through BPSK modulation unit (5), DAC unit (6) with
And bandpass filtering unit (7) transmits a signal to transmitting antenna (9) by up-conversion transmission channel (8).
2. short message check-in signal Doppler frequency compensation control system, feature under high dynamic according to claim 1
Be, the analog if signal that the up-conversion transmission channel (8) exports the DAC unit (6) carry out up-conversion, filtering and
Transmitting antenna (9) are given in power amplification.
3. short message check-in signal Doppler frequency compensation control system, feature under high dynamic according to claim 1
It is, the BPSK modulation unit (5) generates the transmitting pseudo-code that unit (2) generate in numeric field, using the inbound pseudo-code
Sequence generates the emission medium-frequency signal that unit (3) generate to the inbound IF carrier and carries out BPSK modulation.
4. short message check-in signal Doppler frequency compensation control system, feature under high dynamic according to claim 1
It is, the intermediate-freuqncy signal modulated with BPSK that the DAC unit (6) exports the BPSK modulation unit (5) carries out digital-to-analogue
Conversion, and bandpass filtering is carried out, obtain continuous analog if signal.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113422642A (en) * | 2021-08-25 | 2021-09-21 | 长沙海格北斗信息技术有限公司 | Beidou third-number global short message sending method under high-speed dynamic environment |
| CN113422640A (en) * | 2021-08-24 | 2021-09-21 | 长沙海格北斗信息技术有限公司 | Beidou third RDSS area long message sending method under high-speed dynamic environment |
| WO2022077390A1 (en) * | 2020-10-15 | 2022-04-21 | 华为技术有限公司 | Satellite signal processing method and satellite positioning apparatus |
| CN115051745A (en) * | 2022-05-09 | 2022-09-13 | 中国电子科技集团公司第二十九研究所 | Beidou short message inbound signal dynamic compensation method and device of high-speed spacecraft |
| CN116840859A (en) * | 2023-07-05 | 2023-10-03 | 中国人民解放军92728部队 | Satellite navigation receiver channel maintaining method based on dynamic estimation |
-
2018
- 2018-07-26 CN CN201821202093.6U patent/CN209545592U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077390A1 (en) * | 2020-10-15 | 2022-04-21 | 华为技术有限公司 | Satellite signal processing method and satellite positioning apparatus |
| CN113422640A (en) * | 2021-08-24 | 2021-09-21 | 长沙海格北斗信息技术有限公司 | Beidou third RDSS area long message sending method under high-speed dynamic environment |
| CN113422642A (en) * | 2021-08-25 | 2021-09-21 | 长沙海格北斗信息技术有限公司 | Beidou third-number global short message sending method under high-speed dynamic environment |
| CN115051745A (en) * | 2022-05-09 | 2022-09-13 | 中国电子科技集团公司第二十九研究所 | Beidou short message inbound signal dynamic compensation method and device of high-speed spacecraft |
| CN115051745B (en) * | 2022-05-09 | 2024-01-26 | 中国电子科技集团公司第二十九研究所 | Beidou short message inbound signal dynamic compensation method and device for high-speed spacecraft |
| CN116840859A (en) * | 2023-07-05 | 2023-10-03 | 中国人民解放军92728部队 | Satellite navigation receiver channel maintaining method based on dynamic estimation |
| CN116840859B (en) * | 2023-07-05 | 2024-02-09 | 中国人民解放军92728部队 | Satellite navigation receiver channel maintaining method based on dynamic estimation |
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