CN107894718A - A kind of radio signal processing system and method based on phaselocked loop - Google Patents
A kind of radio signal processing system and method based on phaselocked loop Download PDFInfo
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- CN107894718A CN107894718A CN201711094227.7A CN201711094227A CN107894718A CN 107894718 A CN107894718 A CN 107894718A CN 201711094227 A CN201711094227 A CN 201711094227A CN 107894718 A CN107894718 A CN 107894718A
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- signal
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- frequency mixer
- reference source
- power amplifier
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
- G05B17/02—Systems involving the use of models or simulators of said systems electric
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
The present invention relates to a kind of radio signal processing system based on phaselocked loop, including local oscillator reference source one (1), frequency mixer one (2), low pass filter (3), power amplifier one (4), frequency mixer two (5), high-pass filter (6), power amplifier two (7), attenuator (8), Baseline Survey module (9), local oscillator reference source two (10), control module (11), direct synthesizer (12) and phaselocked loop (13).Further relate to a kind of radio signal processing method based on phaselocked loop.The system and method for the present invention, can meet the needs of high dynamic in HWIL simulation, can reduce systematic error again, so as to improve the confidence level of HWIL simulation.
Description
Technical field
The invention belongs to semi-matter simulating system experimental technique field, is related under the conditions of HWIL simulation to aerogram
Number treatment technology, and in particular to a kind of radio signal processing method based on phaselocked loop.
Background technology
The Guidance and control matter emulation of aircraft half tests the reasonability and reliability for examining Control System Design, and high
Degree control loop is an important step in control system.Open loop CW with frequency modulation radio altimeter is to survey high one kind weight
Mode is wanted, open loop CW with frequency modulation radio altimeter surveys high principle, is to measure flight using the reflex of radio wave
True altitude between device and ground or sea.
In the hardware-in-the-loop experiment carried out using open loop CW with frequency modulation radio altimeter, work as aircraft
When 100 meters flat winged, as shown in Fig. 2 can be seen that the high number of degrees sent relative to replicating machine by the emulation data after experiment
According to the altitude curve fluctuation of altimeter output is larger, and maximum change has been even up to 2 meters of height, with showing for live flying
As relatively large deviation be present, the demand of l-G simulation test is unsatisfactory for.
The content of the invention
The purpose of the present invention is：In order to which realistically simulated flight device is in relative space position height, and divided ring radio
Altimeter service behaviour examined, it is necessary to for radio altimeter provide it is a kind of in real time, fidelity it is high, it is reliable and stable, can be with
The method that radioecho signal is simulated in strict accordance with simulated conditions, so as to be controlled back in Hardware-in-loop Simulation Experimentation for height
The simulating, verifying work on road provides technical support.
In view of the above mentioned problem of prior art, according to one side disclosed by the invention, the present invention uses following technology
Scheme：
A kind of radio signal processing system based on phaselocked loop, using direct digital synthesis technique (DDS) and phaselocked loop
(PLL) method realizes the simulation to radioecho signal.Its scheme is by entering line frequency to the echo-signal received
The mode of biasing+Baseline Survey carries out down coversion and obtains intermediate-freuqncy signal, while generates corresponding beat by DDS to the height of simulation
Signal, and carry out the frequency signal that PLL processing obtains including doppler information, then by the signal and the intermediate-freuqncy signal that above generates
It is mixed, upconverts to the frequency range of echo-signal, with this simulation of the equivalent realization to radioecho signal.
Specific method is, first by the output signal f of radio altimeteriSystem is attenuated the signal to through attenuator 8
The scope of demand, then the local oscillation signal f by being generated after Baseline Survey resume module with local oscillator reference source 10In frequency mixer 1
It is mixed, intermediate-freuqncy signal f is obtained by the gating of low pass filter 3r；The intermediate-freuqncy signal is given to power amplifier 1 effectively to be put
Greatly, it is then passed to frequency mixer 25；System control module 6 controls DDS12 modules, obtained comprising more according to current elevation information
The general frequency signal for strangling information, then the frequency f that the signal is stablized through PLL processingc, then frequency fcWith intermediate frequency
Signal frIt is mixed in frequency mixer 25, high-pass filter 6 will gate the up-conversion signal of mixing generation, then by the signal
Give power amplifier 27 effectively to be amplified, so as to obtain radioecho signal fout。
Beneficial effect：
The system and method for the present invention, the main signal processing mode for using PLL+DDS, both may be used using this control model
To meet the needs of high dynamic in HWIL simulation, systematic error can be reduced again, so as to improve the confidence level of HWIL simulation.
Can be with the service behaviour of test flight device (including feature under limiting condition) radio altimeter under various state of flights.
Brief description of the drawings
Radio signal processing system structure charts of the Fig. 1 based on phaselocked loop
Fig. 2 uses replicating machine and the degree of contrast curve of altimeter submitting before PLL
The degree of contrast curve that Fig. 3 is sent out using PLL post-simulations machine with altimeter
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this.
A kind of radio signal processing system based on phaselocked loop of the present invention, as shown in figure 1, including local oscillator reference source one
1st, frequency mixer 1, low pass filter 3, power amplifier 1, frequency mixer 25, high-pass filter 6, power amplifier 27, attenuator 8, at baseline
Manage module 9, local oscillator reference source 2 10, control module 11, direct synthesizer 12 and phaselocked loop 13；
Wherein, local oscillator reference source 1, frequency mixer 1, low pass filter 3, power amplifier 1, frequency mixer 25, high-pass filter
6th, power amplifier 27 is sequentially connected, and attenuator 8, Baseline Survey module 9, frequency mixer 1 are sequentially connected；Control module 11, direct frequency
Synthesizer 12, phaselocked loop 13, frequency mixer 25 are sequentially connected, and local oscillator reference source 2 10 is also connected with direct synthesizer 12.
A kind of radio signal processing method based on phaselocked loop carried out based on said system, is comprised the following steps：
1) the transmission signal fi of radio altimeter gives frequency mixer 2 after attenuator 8 and Baseline Survey module 9 are handled.
2) local oscillator reference source 1 also gives the local oscillation signal f0 of generation to frequency mixer 2；
3) f0 and fi is mixed by frequency mixer 2, obtains down-conversion signal；
4) the low-pass filtered gating of device 3 of down-conversion signal obtains intermediate-freuqncy signal fr；
5) local oscillator reference source 2 10 is connected to direct synthesizer 12 with control module 11, and local oscillator reference source 2 10 will be raw
Into local oscillation signal give direct synthesizer 12, control module 11 gives altitude signal to direct synthesizer 12, directly
Connect frequency synthesizer 12 and generate the frequency signal containing Doppler frequency signal, local oscillator reference source 2 10 is inputted with the frequency signal
Local oscillation signal be modulated, obtain the local oscillation signal containing Doppler frequency signal；
6) direct synthesizer 12 is connected with phaselocked loop 13, to the phase of the local oscillation signal containing Doppler frequency signal
And frequency carries out stabilization, the frequency signal fc for including Doppler frequency signal is obtained；
7) intermediate-freuqncy signal fr is mixed after the amplification of power amplifier 1 with fc in frequency mixer 25；
8) signal that high-pass filter 6 is sent to frequency mixer 25 carries out high-frequency strobe, then by the up-conversion signal of gating
Give power amplifier 27；
9) power amplifier 27 gives the radiofrequency signal fout generated after power amplification the receiving terminal of radio altimeter.
Using the radio signal processing system and method based on phaselocked loop of the present invention, the emulation number after obtained experiment
According to curve as shown in figure 3, it can be seen that after PLL+DDS signal transacting, the height sent relative to replicating machine
Data, the identical property of altitude curve of altimeter output are very high.
Claims (4)
1. a kind of radio signal processing system based on phaselocked loop, including local oscillator reference source one (1), frequency mixer one (2), low pass
Wave filter (3), power amplifier one (4), frequency mixer two (5), high-pass filter (6), power amplifier two (7), attenuator (8), Baseline Survey mould
Block (9), local oscillator reference source two (10), control module (11), direct synthesizer (12) and phaselocked loop (13)；
Wherein, local oscillator reference source one (1), frequency mixer one (2), low pass filter (3), power amplifier one (4), frequency mixer two (5), high pass
Wave filter (6), power amplifier two (7) are sequentially connected, and attenuator (8), Baseline Survey module (9), frequency mixer one (2) are sequentially connected；Control
Molding block (11), direct synthesizer (12), phaselocked loop (13), frequency mixer two (5) are sequentially connected, local oscillator reference source two (10)
Also it is connected with direct synthesizer (12).
2. a kind of radio signal processing method based on phaselocked loop carried out using system as claimed in claim 1, including with
Lower step：
1) the transmission signal f of radio altimeteriGive frequency mixer (2)；
2) local oscillator reference source one (1) is by the local oscillation signal f of generation0Also frequency mixer (2) is given；
3) frequency mixer (2) is by f0And fiMixing, obtains down-conversion signal；
4) the low-pass filtered device of down-conversion signal (3) gating obtains intermediate-freuqncy signal fr；
5) local oscillator reference source two (10) is connected to direct synthesizer (12), local oscillator reference source two (10) with control module (11)
Give the local oscillation signal of generation to direct synthesizer (12), control module (11) gives altitude signal to Direct frequency synthesizer
Device (12), obtains the local oscillation signal containing Doppler frequency signal；
6) local oscillation signal containing Doppler frequency signal is delivered to phaselocked loop (13) by direct synthesizer (12), to containing more
The phase and frequency of the general local oscillation signal for strangling frequency signal carry out stabilization, obtain the frequency signal for including Doppler frequency signal
fc；
7) intermediate-freuqncy signal frThrough power amplifier one (4) amplification after with fcIt is mixed in frequency mixer two (5)；
8) signal that high-pass filter (6) is sent to frequency mixer two (5) carries out high-frequency strobe, then by the up-conversion signal of gating
Give power amplifier two (7)；
9) the radiofrequency signal f that power amplifier two (7) will generate after power amplificationoutGive the receiving terminal of radio altimeter.
3. method as claimed in claim 2, it is characterised in that the transmission signal f of radio altimeteriThrough attenuator (8) and base
Frequency mixer (2) is given after line processing module (9) processing.
4. method as claimed in claim 2, it is characterised in that in step 5), direct synthesizer (12) generation is containing how general
The frequency signal of frequency signal is strangled, the local oscillation signal inputted with the frequency signal to local oscillator reference source two (10) is modulated, obtained
To the local oscillation signal containing Doppler frequency signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711094227.7A CN107894718A (en) | 2017-11-08 | 2017-11-08 | A kind of radio signal processing system and method based on phaselocked loop |
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| CN201711094227.7A CN107894718A (en) | 2017-11-08 | 2017-11-08 | A kind of radio signal processing system and method based on phaselocked loop |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850395A (en) * | 2019-12-05 | 2020-02-28 | 江西洪都航空工业集团有限责任公司 | Radio altitude simulation device and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2746659Y (en) * | 2004-11-12 | 2005-12-14 | 中国电子科技集团公司第五十研究所 | Microwave phase-lock emission module for radio altimeter |
| US20060044182A1 (en) * | 2004-08-26 | 2006-03-02 | Vacanti David C | Radar altimeter |
| CN101771382A (en) * | 2009-12-18 | 2010-07-07 | 武汉虹信通信技术有限责任公司 | Method and device for realizing frequency fine tuning by utilizing direct digital synthesis technology |
| CN103269259A (en) * | 2013-05-23 | 2013-08-28 | 北京小米科技有限责任公司 | Signal demodulation method and device |
| CN204376873U (en) * | 2015-03-02 | 2015-06-03 | 成都宝通天宇电子科技有限公司 | For wireless frequency synthesizer |
| CN105333887A (en) * | 2015-10-16 | 2016-02-17 | 上海无线电设备研究所 | Radio altimeter signal simulation system |
| CN106330384A (en) * | 2015-07-09 | 2017-01-11 | 福建澳瀚信息技术有限公司 | Frequency domain blocking type wireless signal blocking device and method |
| CN106646399A (en) * | 2016-08-12 | 2017-05-10 | 南京理工大学 | Semi-physical simulation device for fuze body object echo simulation |
-
2017
- 2017-11-08 CN CN201711094227.7A patent/CN107894718A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060044182A1 (en) * | 2004-08-26 | 2006-03-02 | Vacanti David C | Radar altimeter |
| CN2746659Y (en) * | 2004-11-12 | 2005-12-14 | 中国电子科技集团公司第五十研究所 | Microwave phase-lock emission module for radio altimeter |
| CN101771382A (en) * | 2009-12-18 | 2010-07-07 | 武汉虹信通信技术有限责任公司 | Method and device for realizing frequency fine tuning by utilizing direct digital synthesis technology |
| CN103269259A (en) * | 2013-05-23 | 2013-08-28 | 北京小米科技有限责任公司 | Signal demodulation method and device |
| CN204376873U (en) * | 2015-03-02 | 2015-06-03 | 成都宝通天宇电子科技有限公司 | For wireless frequency synthesizer |
| CN106330384A (en) * | 2015-07-09 | 2017-01-11 | 福建澳瀚信息技术有限公司 | Frequency domain blocking type wireless signal blocking device and method |
| CN105333887A (en) * | 2015-10-16 | 2016-02-17 | 上海无线电设备研究所 | Radio altimeter signal simulation system |
| CN106646399A (en) * | 2016-08-12 | 2017-05-10 | 南京理工大学 | Semi-physical simulation device for fuze body object echo simulation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850395A (en) * | 2019-12-05 | 2020-02-28 | 江西洪都航空工业集团有限责任公司 | Radio altitude simulation device and method |
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Application publication date: 20180410 |