CN105204009A - Broadband multifunctional radar signal simulation system and method - Google Patents
Broadband multifunctional radar signal simulation system and method Download PDFInfo
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- CN105204009A CN105204009A CN201510578970.4A CN201510578970A CN105204009A CN 105204009 A CN105204009 A CN 105204009A CN 201510578970 A CN201510578970 A CN 201510578970A CN 105204009 A CN105204009 A CN 105204009A
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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
-
- 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
Abstract
The invention relates to a broadband multifunctional radar signal simulation system and method. The broadband multifunctional radar signal simulation system comprises a signal generation module, a down-conversion module, a signal processing module and an up-conversion module. The signal generation module is used for generating a first local oscillation signal, a clutter signal, a noise interference signal, a working state parameter and a second local oscillation signal. The down-conversion module is used for conducting two-time frequency mixing on a radio frequency broadband signal received from an antenna and the first local oscillation signal and the second local oscillation signal respectively to generate an intermediate-frequency broadband signal. The signal processing module is used for producing three channels of intermediate-frequency signals according to the working state parameter and respectively conducting power adjustment and combination on the three channels of intermediate-frequency signals to generate a radar intermediate-frequency broadband signal simulating a real environment. The up-conversion module is used for producing a radio frequency broadband echo signal. Radar echo signals of different clutter scenes can be simulated, and the demands for debugging and training of modern radar in a complex environment can be met.
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 undesired signal.Different types of radar signal simulator is made according to the real needs of radar system.Radar signal simulator in the past can only simulate above-mentioned in a kind of signal, analog functuion is single, and frequency of operation coverage is little, and signal bandwidth is little.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of function singleness solving radar signal simulator in the past, and frequency of operation coverage is little, the wideband multifunction Simulated Radar Signal Generator of the problem that signal bandwidth is little and method.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of wideband multifunction Simulated Radar Signal Generator, comprises signal generation module, down conversion module, signal processing module and up-converter module;
Described signal generation module is for generating the second local oscillation signal and clock signal, and simulation generates working status parameter, and generates the first local oscillation signal according to working status parameter;
Described down conversion module is used for the rf broadband signal received from antenna to carry out twice mixing with the first local oscillation signal and the second local oscillation signal respectively, generates intermediate frequency broadband signal;
Described signal processing module is used for producing three tunnel intermediate-freuqncy signals according to working status parameter process intermediate frequency broadband signal, adjusts respectively and synthesize the radar mean frequency wideband echoes signal of a road Reality simulation environment to three tunnel intermediate-freuqncy signals;
Described up-converter module is used for radar mean frequency wideband echoes signal to carry out twice mixing with the second local oscillation signal and the first local oscillation signal respectively, produces rf broadband echoed signal.
The invention has the beneficial effects as follows: the radar echo signal that different clutter scene can be simulated, clutter scene comprises: land clutter, sea clutter, meteorological clutter, can also analogue noise interference and cheating interference under radar echo signal, the demand that modern radar is debugged and trained under Complex Battlefield Environments can be met.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described signal generation module comprises base modules, control module and local oscillator module;
Described base modules generates the second local oscillation signal and is sent to down conversion module and up-converter module respectively, and generated clock signal is sent to wideband digital frequency memory module;
Described control module simulation generates working status parameter, and is sent to local oscillator module, down conversion module, signal processing module and up-converter module; Working status parameter, for controlling the frequency of local oscillator CMOS macro cell one local oscillation signal, controls bank of filters selector switch and the signal power adjustable attenuation of up-converter module and down conversion module; Control signal processing module produces variety classes signal, and wherein signal type comprises: target echo signal, guided missile command signal, noise signal, cheating interference signal and noise interferences;
Described local oscillator module generates the first local oscillation signal according to working status parameter, and the first local oscillation signal is sent to down conversion module and up-converter module respectively.
Further, described signal processing module comprises wideband digital frequency memory module and intermediate-freuqncy signal synthesis module;
Described wideband digital frequency memory module produces coherent signal according to working status parameter, produces three tunnel intermediate-freuqncy signals simultaneously and sends to intermediate-freuqncy signal synthesis module;
Described intermediate-freuqncy signal synthesis module carries out power adjustment to three tunnel intermediate-freuqncy signals respectively and synthesizes the radar mean frequency wideband echoes signal of a road Reality simulation environment.
Further, described base modules generated clock signal carries out initialization to local oscillator module and wideband digital frequency memory module.
Further, described coherent signal comprises broadband target echo signal, guided missile repeat-back signal, environment noise signal, briquettability noise interferences and duplicity undesired signal.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of wideband multifunction general radar signal simulation method, specifically comprises the following steps:
Step 1: generate the second local oscillation signal, simulation generates working status parameter, and generates the first local oscillation signal according to working status parameter;
Step 2: the rf broadband signal received from antenna is carried out twice mixing with the first local oscillation signal and the second local oscillation signal respectively, generates intermediate frequency broadband signal;
Step 3: produce three tunnel intermediate-freuqncy signals according to working status parameter process intermediate frequency broadband signal, adjusts three tunnel intermediate-freuqncy signals respectively and synthesizes the radar mean frequency wideband echoes signal of a road Reality simulation environment;
Step 4: radar mean frequency wideband echoes signal is carried out twice mixing with the first local oscillation signal and the second local oscillation signal respectively, produces rf broadband echoed signal.
Accompanying drawing explanation
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:
1, signal generation module, 2, down conversion module, 3, signal processing module, 4, up-converter module, 11, base modules, 12, control module, 13, local oscillator module, 31, wideband digital frequency memory module, 32, intermediate-freuqncy signal synthesis module.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of wideband multifunction Simulated Radar Signal Generator, comprises signal generation module 1, down conversion module 2, signal processing module 3 and up-converter module 4;
Described signal generation module 1 is for generating the second local oscillation signal and clock signal, and simulation generates working status parameter, and generates the first local oscillation signal according to working status parameter;
Described down conversion module 2 carries out twice mixing with the first local oscillation signal and the second local oscillation signal respectively for the rf broadband signal will received from antenna, generates intermediate frequency broadband signal;
Described signal processing module 3, for producing three tunnel intermediate-freuqncy signals according to working status parameter process intermediate frequency broadband signal, adjusts three tunnel intermediate-freuqncy signals respectively and synthesizes the radar mean frequency wideband echoes signal of a road Reality simulation environment;
Described up-converter module 4, for radar mean frequency wideband echoes signal is carried out twice mixing with the second local oscillation signal and the first local oscillation signal respectively, produces rf broadband echoed signal.
As shown in Figure 2, for a kind of wideband multifunction Simulated Radar Signal Generator described in the specific embodiment of the invention 1, comprise base modules 11, control module 12, local oscillator module 13, down conversion module 2, wideband digital frequency memory module 31, intermediate-freuqncy signal synthesis module 32 and up-converter module 4;
Described base modules 11 generated clock signal carries out initialization to local oscillator module and wideband digital frequency memory module; Base modules generates the first local oscillation signal and is sent to down conversion module 2 and up-converter module 4 respectively;
Described control module 12 is simulated and is generated working status parameter, and is sent to local oscillator module 13, down conversion module 2, signal processing module 3 and up-converter module 4; Working status parameter generates the frequency of a local oscillation signal for controlling local oscillator module 13, control bank of filters selector switch and the 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 comprises: target echo signal, guided missile command signal, noise signal, cheating interference signal and noise interferences;
Described local oscillator module 13 generates the second local oscillation signal according to working status parameter, and the second local oscillation signal is sent to down conversion module 2 and up-converter module 4 respectively;
The rf broadband signal that described down conversion module 2 receiving antenna transfers to, carries out twice mixing with a local oscillation signal and two local oscillation signals respectively by rf broadband signal, generates intermediate frequency broadband signal;
Described wideband digital frequency memory module 31 produces broadband target echo signal, guided missile repeat-back signal, environment noise signal, briquettability noise interferences and duplicity undesired signal according to working status parameter, produces three tunnel intermediate-freuqncy signals simultaneously and sends to intermediate-freuqncy signal synthesis module 32;
Described intermediate-freuqncy signal synthesis module 32 carries out power adjustment to three tunnel intermediate-freuqncy signals respectively and synthesizes the radar mean frequency wideband echoes signal of a road Reality simulation environment;
Radar mean frequency wideband echoes signal is carried out twice mixing with two local oscillation signals and a local oscillation signal by described up-converter module 4 respectively, produces rf broadband echoed signal.
As shown in Figure 3, be a kind of wideband multifunction general radar signal simulation method of the present invention, specifically comprise the following steps:
Step 1: generate the second local oscillation signal, simulation generates working status parameter, and generates the first local oscillation signal according to working status parameter;
Step 2: the rf broadband signal received from antenna is carried out twice mixing with the first local oscillation signal and the second local oscillation signal respectively, generates intermediate frequency broadband signal;
Step 3: produce three tunnel intermediate-freuqncy signals according to working status parameter process intermediate frequency broadband signal, adjusts three tunnel intermediate-freuqncy signals respectively and synthesizes the radar mean frequency wideband echoes signal of a road Reality simulation environment;
Step 4: radar mean frequency wideband echoes signal is carried out twice mixing with the first local oscillation signal and the second local oscillation signal respectively, produces rf broadband echoed signal.
Described step 3 specifically comprises the following steps:
Step 3.1: produce coherent signal according to working status parameter, produce three tunnel intermediate-freuqncy signals simultaneously;
Step 3.2: respectively power adjustment carried out to three tunnel intermediate-freuqncy signals and synthesize the radar mean frequency wideband echoes signal of a road Reality simulation environment.
Described coherent signal comprises broadband target echo signal, guided missile repeat-back signal, environment noise signal, briquettability noise interferences and duplicity undesired signal.
During the work of wideband multifunction radar signal simulator, local oscillator module 13 and wideband digital frequency memory module 31 is given respectively by base modules 11 clocking, complete the initialization of two modules, control module 12 produces wideband multifunction radar signal simulator working status parameter and gives local oscillator module 13 respectively, down conversion module 2, wideband digital frequency memory module 31, intermediate-freuqncy signal synthesis module 32 and up-converter module 4, local oscillator module 13 produces the second local oscillation signal and gives down conversion module 2 and up-converter module 4 respectively, the rf broadband signal that down conversion module 2 receiving antenna is sent here and a local oscillation signal, two local oscillation signals carry out twice mixing, finally export intermediate frequency broadband signal and give wideband digital frequency memory module 31, wideband digital frequency memory module 31 produces broadband target echo signal according to working status parameter, guided missile repeat-back signal, environment noise signal, briquettability noise interferences and duplicity undesired signal, can produce three tunnel intermediate-freuqncy signals gives intermediate-freuqncy signal synthesis module 32 simultaneously, intermediate-freuqncy signal synthesis module carries out power adjustment to three tunnel intermediate-freuqncy signals respectively and synthesizes the radar mean frequency wideband echoes signal of a road Reality simulation environment, the intermediate-freuqncy signal that intermediate-freuqncy signal synthesis module is sent here by up-converter module 4 and two local oscillation signals, one local oscillation signal carries out twice mixing, produce rf broadband echoed signal.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a wideband multifunction Simulated Radar Signal Generator, is characterized in that, comprises signal generation module, down conversion module, signal processing module and up-converter module;
Described signal generation module is for generating the second local oscillation signal and clock signal, and simulation generates working status parameter, and generates the first local oscillation signal according to working status parameter;
Described down conversion module is used for the rf broadband signal received from antenna to carry out twice mixing with the first local oscillation signal and the second local oscillation signal respectively, generates intermediate frequency broadband signal;
Described signal processing module is used for producing three tunnel intermediate-freuqncy signals according to working status parameter process intermediate frequency broadband signal, adjusts respectively and synthesize the radar mean frequency wideband echoes signal of a road Reality simulation environment to three tunnel intermediate-freuqncy signals;
Described up-converter module is used for radar mean frequency wideband echoes signal to carry out twice mixing with the second local oscillation signal and the first local oscillation signal respectively, produces rf broadband echoed signal.
2. a kind of wideband multifunction Simulated Radar Signal Generator according to claim 1, is characterized in that, described signal generation module comprises base modules, control module and local oscillator module;
Described base modules generates the second local oscillation signal and is sent to down conversion module and up-converter module respectively, and generated clock signal is sent to wideband digital frequency memory module;
Described control module simulation generates working status parameter, and is sent to local oscillator module, down conversion module, signal processing module and up-converter module; Working status parameter, for controlling the frequency of local oscillator CMOS macro cell one local oscillation signal, controls bank of filters selector switch and the signal power adjustable attenuation of up-converter module and down conversion module; Control signal processing module produces variety classes signal, and wherein signal type comprises: target echo signal, guided missile command signal, noise signal, cheating interference signal and noise interferences;
Described local oscillator module generates the first local oscillation signal according to working status parameter, and the first local oscillation signal is sent to down conversion module and up-converter module respectively.
3. a kind of wideband multifunction Simulated Radar Signal Generator according to claim 1 and 2, is characterized in that, described signal processing module comprises wideband digital frequency memory module and intermediate-freuqncy signal synthesis module;
Described wideband digital frequency memory module produces coherent signal according to working status parameter, produces three tunnel intermediate-freuqncy signals simultaneously and sends to intermediate-freuqncy signal synthesis module;
Described intermediate-freuqncy signal synthesis module carries out power adjustment to three tunnel intermediate-freuqncy signals respectively and synthesizes the radar mean frequency wideband echoes signal of a road Reality simulation environment.
4. a kind of wideband multifunction Simulated Radar Signal Generator according to claim 3, is characterized in that, described base modules generated clock signal carries out initialization to local oscillator module and wideband digital frequency memory module.
5. a kind of wideband multifunction Simulated Radar Signal Generator according to claim 3, it is characterized in that, described coherent signal comprises broadband target echo signal, guided missile repeat-back signal, environment noise signal, briquettability noise interferences and duplicity undesired signal.
6. a wideband multifunction general radar signal simulation method, is characterized in that, specifically comprises the following steps:
Step 1: generate the second local oscillation signal, simulation generates working status parameter, and generates the first local oscillation signal according to working status parameter;
Step 2: the rf broadband signal received from antenna is carried out twice mixing with the first local oscillation signal and the second local oscillation signal respectively, generates intermediate frequency broadband signal;
Step 3: according to working status parameter process intermediate frequency broadband signal, produce three tunnel intermediate-freuqncy signals, adjusts three tunnel intermediate-freuqncy signals respectively and synthesizes the radar mean frequency wideband echoes signal of a road Reality simulation environment;
Step 4: radar mean frequency wideband echoes signal is carried out twice mixing with the first local oscillation signal and the second local oscillation signal respectively, produces rf broadband echoed signal.
7. a kind of wideband multifunction general radar signal simulation method according to claim 6, it is characterized in that, described step 3 specifically comprises the following steps:
Step 3.1: produce coherent signal according to working status parameter, three tunnel intermediate-freuqncy signals can be produced simultaneously;
Step 3.2: respectively power adjustment carried out to three tunnel intermediate-freuqncy signals and synthesize the radar mean frequency wideband echoes signal of a road Reality simulation environment.
8. a kind of wideband multifunction general radar signal simulation method according to claim 7, it is characterized in that, described coherent signal comprises broadband target echo signal, guided missile repeat-back signal, environment noise signal, briquettability noise interferences and duplicity undesired signal.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105807270A (en) * | 2016-03-15 | 2016-07-27 | 北京无线电测量研究所 | Coherent wind lidar wind measurement performance analysis method 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 |
| CN107367717A (en) * | 2017-09-22 | 2017-11-21 | 上海航天测控通信研究所 | A kind of Radar Multi Target intermediate frequency simulator |
| CN107462876A (en) * | 2017-07-28 | 2017-12-12 | 中国人民解放军海军航空工程学院 | A kind of 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 |
| CN107831479A (en) * | 2017-12-01 | 2018-03-23 | 北京润科通用技术有限公司 | A kind of analogue echoes 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 |
| CN109782237A (en) * | 2017-11-10 | 2019-05-21 | 北京航天万源科技有限公司 | A kind of Radar Analog Echo and interference signal measuring device |
| 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 |
| CN115219999A (en) * | 2022-06-29 | 2022-10-21 | 扬州宇安电子科技有限公司 | Broadband low-stray cannonball simulation system |
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| CN105807270A (en) * | 2016-03-15 | 2016-07-27 | 北京无线电测量研究所 | Coherent wind lidar wind measurement performance analysis method and system |
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| CN107831479A (en) * | 2017-12-01 | 2018-03-23 | 北京润科通用技术有限公司 | A kind of analogue echoes method and system |
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| 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 |
| CN115219999A (en) * | 2022-06-29 | 2022-10-21 | 扬州宇安电子科技有限公司 | Broadband low-stray cannonball simulation system |
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