CN105204009B - A kind of wideband multifunction Simulated Radar Signal Generator and method - Google Patents
A kind of wideband multifunction Simulated Radar Signal Generator and method Download PDFInfo
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- CN105204009B CN105204009B CN201510578970.4A CN201510578970A CN105204009B CN 105204009 B CN105204009 B CN 105204009B CN 201510578970 A CN201510578970 A CN 201510578970A CN 105204009 B CN105204009 B CN 105204009B
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention relates to a kind of wideband multifunction Simulated Radar Signal Generator and method, its system includes signal generation module, down conversion module, signal processing module and up-converter module；The signal generation module is used to generate the first local oscillation signal, noise signal, noise interferences, working status parameter and the second local oscillation signal；The down conversion module is used to the rf broadband signal received from antenna being mixed twice with the first local oscillation signal and the second local oscillation signal respectively, generates intermediate frequency broadband signal；The signal processing module is used to produce three tunnel intermediate-freuqncy signals according to working status parameter, and respectively three tunnel intermediate-freuqncy signals are carried out with power adjustment and synthesizes the radar mean frequency wideband echoes signal for simulating true environment all the way；The up-converter module is used to produce rf broadband echo-signal.The radar echo signal of different clutter scenes can be simulated, meets the needs of modern radar is debugged and trained under complex environment.
Description
Technical field
The present invention relates to a kind of wideband multifunction Simulated Radar Signal Generator and method.
Background technology
Radar signal simulator is the visual plant of radar system debugging and daily workout, for guinea pig target echo
Signal, guided missile repeat-back signal, environment noise signal, briquettability noise interferences and duplicity interference signal.According to thunder
Real needs up to system make different types of radar signal simulator.Conventional radar signal simulator can only simulate above-mentioned
In a kind of signal, analog functuion is single, and working frequency coverage is small, and signal bandwidth is small.
The content of the invention
It is single that the technical problems to be solved by the invention are to provide a kind of function of solving conventional radar signal simulator, work
The wideband multifunction Simulated Radar Signal Generator and method for the problem of working frequency coverage is small, and signal bandwidth is small.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of wideband multifunction Simulated Radar Signal Generator,
Including signal generation module, down conversion module, signal processing module and up-converter module；
The signal generation module is used to generate the second local oscillation signal and clock signal, and simulation generates working status parameter,
And the first local oscillation signal is generated according to working status parameter；
The down conversion module be used for will the rf broadband signal that be received from antenna respectively with the first local oscillation signal and second
Local oscillation signal is mixed twice, generates intermediate frequency broadband signal；
The signal processing module is used to handle intermediate frequency broadband signal three tunnel intermediate-freuqncy signals of generation according to working status parameter,
Respectively three tunnel intermediate-freuqncy signals are adjusted and synthesized with the radar mean frequency wideband echoes signal for simulating true environment all the way；
The up-converter module be used for by radar mean frequency wideband echoes signal respectively with the second local oscillation signal and the first local oscillator
Signal is mixed twice, produces rf broadband echo-signal.
The beneficial effects of the invention are as follows：The radar echo signal of different clutter scenes can be simulated, clutter scene includes：Ground
Clutter, sea clutter, meteorological clutter, it can be disclosure satisfy that existing with the radar echo signal under analogue noise interference and cheating interference
The demand debugged and trained under Complex Battlefield Environments for radar.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, the signal generation module includes base modules, control module and local oscillator module；
The base modules generate the second local oscillation signal and are separately sent to down conversion module and up-converter module, generate clock
Signal is sent to wideband digital frequency memory module；
The control module simulation generation working status parameter, and it is sent to local oscillator module, down conversion module, signal transacting
Module and up-converter module；Working status parameter is used for the frequency for controlling local oscillator module to generate a local oscillation signal, controls up-conversion
The wave filter group selecting switch and signal power adjustable attenuation of module and down conversion module；Control signal processing module produces different
Species signal, wherein signal type include：Target echo signal, guided missile command signal, noise signal, cheating interference signal and make an uproar
Acoustic jamming signal；
The local oscillator module generates the first local oscillation signal according to working status parameter, and the first local oscillation signal is sent respectively
To down conversion module and up-converter module.
Further, the signal processing module includes wideband digital frequency memory module and intermediate-freuqncy signal synthesis module；
The wideband digital frequency memory module produces coherent signal according to working status parameter, while produces three tunnel intermediate-freuqncy signals
It is sent to intermediate-freuqncy signal synthesis module；
The intermediate-freuqncy signal synthesis module carries out power adjustment to three tunnel intermediate-freuqncy signals and synthesizes simulation all the way very respectively
The radar mean frequency wideband echoes signal of real environment.
Further, the base modules generation clock signal is carried out initial to local oscillator module and wideband digital frequency memory module
Change.
Further, the coherent signal includes broadband target echo signal, guided missile repeat-back signal, environment clutter letter
Number, briquettability noise interferences and duplicity interference signal.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of wideband multifunction general radar signal simulation method,
Specifically include following steps：
Step 1：Generate the second local oscillation signal, simulation generation working status parameter, and according to working status parameter generation the
One local oscillation signal；
Step 2：The rf broadband signal received from antenna is carried out with the first local oscillation signal and the second local oscillation signal respectively
It is mixed twice, generates intermediate frequency broadband signal；
Step 3：Intermediate frequency broadband signal is handled according to working status parameter and produces three tunnel intermediate-freuqncy signals, respectively to three road intermediate frequencies
Signal is adjusted and synthesized the radar mean frequency wideband echoes signal for simulating true environment all the way；
Step 4：Radar mean frequency wideband echoes signal is carried out twice with the first local oscillation signal and the second local oscillation signal respectively
Mixing, produce rf broadband echo-signal.
Brief description of the drawings
Fig. 1 is a kind of wideband multifunction Simulated Radar Signal Generator structured flowchart of the present invention；
Fig. 2 is a kind of wideband multifunction Simulated Radar Signal Generator structured flowchart described in the specific embodiment of the invention 1；
Fig. 3 is a kind of wideband multifunction general radar signal simulation method flow diagram of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, signal generation module, 2, down conversion module, 3, signal processing module, 4, up-converter module, 11, base modules,
12nd, control module, 13, local oscillator module, 31, wideband digital frequency memory module, 32, intermediate-freuqncy signal synthesis module.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
As shown in figure 1, a kind of wideband multifunction Simulated Radar Signal Generator, including signal generation module 1, down conversion module
2nd, signal processing module 3 and up-converter module 4；
The signal generation module 1 is used to generate the second local oscillation signal and clock signal, and simulation generates working status parameter,
And the first local oscillation signal is generated according to working status parameter；
The down conversion module 2 be used for will the rf broadband signal that be received from antenna respectively with the first local oscillation signal and second
Local oscillation signal is mixed twice, generates intermediate frequency broadband signal；
The signal processing module 3 is used to handle the road intermediate frequencies letter of intermediate frequency broadband signal generation three according to working status parameter
Number, respectively three tunnel intermediate-freuqncy signals are adjusted and synthesized with the radar mean frequency wideband echoes signal for simulating true environment all the way；
The up-converter module 4 be used for by radar mean frequency wideband echoes signal respectively with the second local oscillation signal and the first local oscillator
Signal is mixed twice, produces rf broadband echo-signal.
As shown in Fig. 2 be a kind of wideband multifunction Simulated Radar Signal Generator described in the specific embodiment of the invention 1, bag
Base modules 11, control module 12, local oscillator module 13, down conversion module 2, wideband digital frequency memory module 31, intermediate-freuqncy signal is included to close
Into module 32 and up-converter module 4；
The base modules 11 generate clock signal and local oscillator module and wideband digital frequency memory module are initialized；Benchmark
Module generates the first local oscillation signal and is separately sent to down conversion module 2 and up-converter module 4；
The simulation of the control module 12 generation working status parameter, and it is sent to local oscillator module 13, down conversion module 2, letter
Number processing module 3 and up-converter module 4；Working status parameter is used for the frequency for controlling local oscillator module 13 to generate a local oscillation signal,
Control the wave filter group selecting switch and signal power adjustable attenuation of up-converter module 4 and down conversion module 2；Control signal processing
Module 3 produces variety classes signal, and wherein signal type includes：Target echo signal, guided missile command signal, noise signal, take advantage of
Deceive interference signal and noise interferences；
The local oscillator module 13 generates the second local oscillation signal according to working status parameter, and the second local oscillation signal is sent out respectively
It is sent to down conversion module 2 and up-converter module 4；
The reception antenna of down conversion module 2 transmit to rf broadband signal, by rf broadband signal respectively with one
Shake signal and two local oscillation signals are mixed twice, generate intermediate frequency broadband signal；
The wideband digital frequency memory module 31 produces broadband target echo signal according to working status parameter, guided missile instruction is answered
Signal, environment noise signal, briquettability noise interferences and duplicity interference signal are answered, while produces three tunnel intermediate-freuqncy signal hairs
Give intermediate-freuqncy signal synthesis module 32；
The intermediate-freuqncy signal synthesis module 32 carries out power adjustment and synthesized to simulate all the way to three tunnel intermediate-freuqncy signals respectively
The radar mean frequency wideband echoes signal of true environment；
The up-converter module 4 carries out radar mean frequency wideband echoes signal with two local oscillation signals and a local oscillation signal respectively
It is mixed twice, produces rf broadband echo-signal.
As shown in figure 3, being a kind of wideband multifunction general radar signal simulation method of the present invention, following step is specifically included
Suddenly：
Step 1：Generate the second local oscillation signal, simulation generation working status parameter, and according to working status parameter generation the
One local oscillation signal；
Step 2：The rf broadband signal received from antenna is carried out with the first local oscillation signal and the second local oscillation signal respectively
It is mixed twice, generates intermediate frequency broadband signal；
Step 3：Intermediate frequency broadband signal is handled according to working status parameter and produces three tunnel intermediate-freuqncy signals, respectively to three road intermediate frequencies
Signal is adjusted and synthesized the radar mean frequency wideband echoes signal for simulating true environment all the way；
Step 4：Radar mean frequency wideband echoes signal is carried out twice with the first local oscillation signal and the second local oscillation signal respectively
Mixing, produce rf broadband echo-signal.
The step 3 specifically includes following steps：
Step 3.1：Coherent signal is produced according to working status parameter, while produces three tunnel intermediate-freuqncy signals；
Step 3.2：Respectively three tunnel intermediate-freuqncy signals are carried out with power adjustment and synthesizes the radar for simulating true environment all the way
Intermediate frequency wideband echoes signal.
The coherent signal includes broadband target echo signal, guided missile repeat-back signal, environment noise signal, briquettability
Noise interferences and duplicity interference signal.
When wideband multifunction radar signal simulator works, produce clock signal by base modules 11 and give local oscillator mould respectively
Block 13 and wideband digital frequency memory module 31, complete the initialization of two modules, and control module 12 produces wideband multifunction radar letter
Number simulator working status parameter gives local oscillator module 13, down conversion module 2, wideband digital frequency memory module 31, intermediate frequency letter respectively
Number synthesis module 32 and up-converter module 4, local oscillator module 13 produce the second local oscillation signal and give down conversion module 2 and upper change respectively
Frequency module 4, rf broadband signal and a local oscillation signal that the reception antenna of down conversion module 2 is sent, two local oscillation signals are carried out twice
Mixing, finally export intermediate frequency broadband signal and give wideband digital frequency memory module 31, wideband digital frequency memory module 31 is according to work shape
State parameter produce broadband target echo signal, guided missile repeat-back signal, environment noise signal, briquettability noise interferences and
Duplicity interference signal, while three tunnel intermediate-freuqncy signals can be produced and give intermediate-freuqncy signal synthesis module 32, intermediate-freuqncy signal synthesis module
Respectively three tunnel intermediate-freuqncy signals are carried out with power adjustment and synthesizes the radar mean frequency wideband echoes signal for simulating true environment all the way,
Up-converter module 4 is mixed the intermediate-freuqncy signal that intermediate-freuqncy signal synthesis module is sent and two local oscillation signals, a local oscillation signal twice
Frequently, rf broadband echo-signal is produced.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (8)
- A kind of 1. wideband multifunction Simulated Radar Signal Generator, it is characterised in that including signal generation module, down conversion module, Signal processing module and up-converter module；The signal generation module is used to generate the second local oscillation signal and clock signal, simulation generation working status parameter, and root The first local oscillation signal is generated according to working status parameter；The down conversion module be used for will the rf broadband signal that be received from antenna respectively with the first local oscillation signal and the second local oscillator Signal is mixed twice, generates intermediate frequency broadband signal；The signal processing module is used to handle intermediate frequency broadband signal three tunnel intermediate-freuqncy signals of generation according to working status parameter, respectively Three tunnel intermediate-freuqncy signals are adjusted and synthesized with the radar mean frequency wideband echoes signal for simulating true environment all the way；The up-converter module be used for by radar mean frequency wideband echoes signal respectively with the second local oscillation signal and the first local oscillation signal It is mixed twice, produces rf broadband echo-signal.
- A kind of 2. wideband multifunction Simulated Radar Signal Generator according to claim 1, it is characterised in that the signal life Include base modules, control module and local oscillator module into module；The base modules generate the second local oscillation signal and are separately sent to down conversion module and up-converter module, generate clock signal It is sent to wideband digital frequency memory module；The control module simulation generation working status parameter, and it is sent to local oscillator module, down conversion module, signal processing module And up-converter module；Working status parameter is used for the frequency for controlling local oscillator module to generate a local oscillation signal, controls up-converter module With the wave filter group selecting switch and signal power adjustable attenuation of down conversion module；Control signal processing module produces variety classes Signal, wherein signal type include：Target echo signal, guided missile command signal, noise signal, cheating interference signal and noise are done Disturb signal；The local oscillator module generates the first local oscillation signal according to working status parameter, and the first local oscillation signal is separately sent to down Frequency-variable module and up-converter module.
- 3. a kind of wideband multifunction Simulated Radar Signal Generator according to claim 2, it is characterised in that at the signal Reason module includes wideband digital frequency memory module and intermediate-freuqncy signal synthesis module；The wideband digital frequency memory module produces coherent signal according to working status parameter, while produces three tunnel intermediate-freuqncy signals and send Give intermediate-freuqncy signal synthesis module；The intermediate-freuqncy signal synthesis module carries out power adjustment and synthesized to simulate true ring all the way to three tunnel intermediate-freuqncy signals respectively The radar mean frequency wideband echoes signal in border.
- A kind of 4. wideband multifunction Simulated Radar Signal Generator according to claim 3, it is characterised in that the benchmark mould Block generation clock signal initializes to local oscillator module and wideband digital frequency memory module.
- A kind of 5. wideband multifunction Simulated Radar Signal Generator according to claim 3, it is characterised in that the related letter Number include broadband target echo signal, guided missile repeat-back signal, environment noise signal, briquettability noise interferences and deception Property interference signal.
- A kind of 6. wideband multifunction general radar signal simulation method, it is characterised in that specifically include following steps：Step 1：The second local oscillation signal, simulation generation working status parameter are generated, and first is generated according to working status parameter Shake signal；Step 2：The rf broadband signal received from antenna is carried out twice with the first local oscillation signal and the second local oscillation signal respectively Mixing, generate intermediate frequency broadband signal；Step 3：Intermediate frequency broadband signal is handled according to working status parameter, produces three tunnel intermediate-freuqncy signals, respectively to three road intermediate frequency letters Number it is adjusted and synthesizes the radar mean frequency wideband echoes signal for simulating true environment all the way；Step 4：Radar mean frequency wideband echoes signal is mixed twice with the first local oscillation signal and the second local oscillation signal respectively, Produce rf broadband echo-signal.
- A kind of 7. wideband multifunction general radar signal simulation method according to claim 6, it is characterised in that the step 3 Specifically include following steps：Step 3.1：Coherent signal is produced according to working status parameter, three tunnel intermediate-freuqncy signals can be produced simultaneously；Step 3.2：Respectively three tunnel intermediate-freuqncy signals are carried out with power adjustment and synthesizes the radar mean frequency for simulating true environment all the way Wideband echoes signal.
- A kind of 8. wideband multifunction general radar signal simulation method according to claim 7, it is characterised in that the related letter Number include broadband target echo signal, guided missile repeat-back signal, environment noise signal, briquettability noise interferences and deception Property interference signal.
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105807270B (en) * | 2016-03-15 | 2018-04-03 | 北京无线电测量研究所 | A kind of coherent wind laser radar surveys wind method for analyzing performance and system |
| CN106597398A (en) * | 2016-12-21 | 2017-04-26 | 中国航空工业集团公司雷华电子技术研究所 | Digital radar simulation system |
| CN107229038A (en) * | 2017-06-22 | 2017-10-03 | 北京仿真中心 | A kind of clutter simulation method in kind of radio frequency based on GPU half |
| CN107462876B (en) * | 2017-07-28 | 2020-02-21 | 中国人民解放军海军航空工程学院 | Radar echo signal simulator |
| CN107576944A (en) * | 2017-08-15 | 2018-01-12 | 成都普诺科技有限公司 | Change radiofrequency signal delay time remote analog system |
| CN107367717B (en) * | 2017-09-22 | 2020-05-22 | 上海航天测控通信研究所 | Radar multi-target intermediate frequency simulation device |
| CN109782237B (en) * | 2017-11-10 | 2022-05-06 | 北京航天万源科技有限公司 | Radar simulated echo and interference signal measuring device |
| CN107831479B (en) * | 2017-12-01 | 2020-05-05 | 北京润科通用技术有限公司 | Echo simulation method and system |
| CN109116324A (en) * | 2018-09-17 | 2019-01-01 | 江西洪都航空工业集团有限责任公司 | A kind of Passive Radar Seeker ultra wideband receiver conversion method |
| CN112068095A (en) * | 2020-09-15 | 2020-12-11 | 中国航空工业集团公司雷华电子技术研究所 | Radar test equipment |
| CN115219999B (en) * | 2022-06-29 | 2023-07-18 | 扬州宇安电子科技有限公司 | Broadband low-stray shell simulation system |
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