CN204086526U - A kind of radar echo simulator - Google Patents
A kind of radar echo simulator Download PDFInfo
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- CN204086526U CN204086526U CN201420564855.2U CN201420564855U CN204086526U CN 204086526 U CN204086526 U CN 204086526U CN 201420564855 U CN201420564855 U CN 201420564855U CN 204086526 U CN204086526 U CN 204086526U
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Abstract
The utility model discloses a kind of radar echo simulator, comprise the radar receiver, low noise amplifier, low-converter, A/D converter, quadrature down converter, coarse delay unit, smart delay cell, Doppler modulator, D/A converter, upconverter and the radar transmitter that connect successively, described Doppler modulator is also connected with computing machine; Coarse delay unit is QDR storer, and smart delay cell comprises connected tapped delay line and wave filter, and tapped delay line connects coarse delay unit, and wave filter connects Doppler modulator.The utility model is for dissimilar target, by the real-time resolving of computing machine to combat data, control to produce that the scattering of target echo is counted, one-dimensional range profile number and interval, and the modulation carrying out Doppler frequency realizes the simulation to all kinds of target, the Extended target of different angles and attitude can be simulated, can to High-Resolution Guide Radar, especially its target identification system carries out testing evaluation.
Description
Technical field
The utility model relates to a kind of simulator, is specifically related to a kind of radar echo simulator.
Background technology
In high resolution radar, range resolution has been less than realistic objective size, target echo should be regarded launching centre radial distribution function as with transmitting and act on and the scattering center echo distributed in time domain that formed, independently can not regard point target as, needs can simulate that resolution is lower, the high-performance echo simulator of the more Extended target of scattering point, with this, testing evaluation is carried out to High-Resolution Guide Radar especially its target identification system, and existing echo simulator does not reach such requirement.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of radar echo simulator.
In order to achieve the above object, the technical scheme that the utility model adopts is:
A kind of radar echo simulator, comprise the radar receiver, low noise amplifier, low-converter, A/D converter, quadrature down converter, coarse delay unit, smart delay cell, Doppler modulator, D/A converter, upconverter and the radar transmitter that connect successively, described Doppler modulator is also connected with computing machine; Described coarse delay unit is QDR storer, and described smart delay cell comprises connected tapped delay line and wave filter, and described tapped delay line connects coarse delay unit, and described wave filter connects Doppler modulator.
The delay precision of described coarse delay unit is 16/3ns.
The delay precision of described smart delay cell is 1/3ns.
Described computing machine is human-computer interaction device, sends that the scattering of target echo is counted, one-dimensional range profile number and interval to Doppler modulator.
To Doppler modulator, described computing machine sends that the scattering of target echo counts is 200, and the maximum spacing of scattering point is 2 meters.
The frequency of the radar signal detecting A/D converter output, amplitude, pulse width and the measurement detection equipment in cycle is also connected with between described A/D converter and quadrature down converter.
Described measurement detection equipment comprises connected wave detector sum counter, and described wave detector is connected with A/D converter, and described counter is connected with quadrature down converter.
The beneficial effect that the utility model reaches: the utility model is for dissimilar target, by the real-time resolving of computing machine to combat data, control to produce that the scattering of target echo is counted, one-dimensional range profile number and interval, and the modulation carrying out Doppler frequency realizes the simulation to all kinds of target, the Extended target of different angles and attitude can be simulated, can to High-Resolution Guide Radar, especially its target identification system carries out testing evaluation.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, a kind of radar echo simulator, comprise the radar receiver, low noise amplifier, low-converter, A/D converter, measurement detection equipment, quadrature down converter, coarse delay unit, smart delay cell, Doppler modulator, D/A converter, upconverter and the radar transmitter that connect successively, Doppler modulator is also connected with computing machine.
Radar receiver is in order to receiving radar signal; Low noise amplifier is in order to carry out low noise amplification to radar signal; Low-converter is in order to being the radar signal of Low Medium Frequency to frequency down conversion to the frequency of the radar signal after low noise amplification; Low Medium Frequency radar signal is converted to Low Medium Frequency digital radar signal by A/D converter; Measure detection equipment in order to the frequency of the radar signal that detects A/D converter and export, amplitude, pulse width and cycle, comprise connected wave detector sum counter, wave detector is connected with A/D converter, and counter is connected with quadrature down converter; Quadrature down converter is in order to downconvert to Low Medium Frequency digital radar signal the intermediate frequency digital radar signal that frequency is zero; Coarse delay unit is QDR storer, and in order to be that the intermediate frequency digital radar signal of zero carries out coarse delay to frequency, it postpones precision is 16/3ns; Essence delay cell is in order to be that the intermediate frequency digital radar signal of zero carries out essence delay to the frequency after coarse delay, and comprise connected tapped delay line and wave filter, tapped delay line connects coarse delay unit, and wave filter connects Doppler modulator, and delay precision is 1/3ns; Computing machine is human-computer interaction device, sends that the scattering of target echo is counted, one-dimensional range profile number and interval to Doppler modulator, and to strangle that scattering that modulator sends target echo counts be 200 to computing machine to general, and the maximum spacing of scattering point is 2 meters; The scattering of the target echo that Doppler modulator receiving computer sends is counted, one-dimensional range profile number and interval, and the frequency received after carrying out essence delay is the intermediate frequency digital radar signal of zero, carries out Doppler frequency modulation to the intermediate frequency digital radar signal that frequency is zero; D/A converter is in order to be converted to intermediate frequency guinea pig signal by intermediate frequency digital radar signal; Upconverter in order to by modulated intermediate frequency guinea pig signal madulation on radio frequency band; Radar transmitter sends the radar signal that upconverter exports.
Above-mentioned radar echo simulator, in implementation procedure, utilize QDR storer to realize large the delay to the radar signal received, adopt the tapped delay modulation technology of tapped delay line and filter construction accurate, high resolving power postpones, finally carry out Doppler modulation process, export after DA conversion, its middle high-resolution delay component is in order to arrive the balance between the demand of 200 scattering point time delays and resource, adopt the structure of time delay superposition in scattering point time domain, N number of scattering point is the signal that N-1 scattering point is delayed exactly, and then independently carry out Doppler modulation.For dissimilar target, by the real-time resolving of computing machine to combat data, control to produce that the scattering of target echo is counted, one-dimensional range profile number and interval, and the modulation etc. carrying out Doppler frequency realizes the simulation to all kinds of target.
In sum, above-mentioned radar echo simulator, the distributed object that 200 scattering points form can be produced by an autonomous channel, the spacing of scattering point can reach 2m, and the Extended target of different angles and attitude can be simulated by the RCS and Doppler parameter adjusting each scattering point, so just can carry out testing evaluation to High-Resolution Guide Radar especially its target identification system.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and distortion, these improve and distortion also should be considered as protection domain of the present utility model.
Claims (7)
1. a radar echo simulator, it is characterized in that: comprise the radar receiver, low noise amplifier, low-converter, A/D converter, quadrature down converter, coarse delay unit, smart delay cell, Doppler modulator, D/A converter, upconverter and the radar transmitter that connect successively, described Doppler modulator is also connected with computing machine; Described coarse delay unit is QDR storer, and described smart delay cell comprises connected tapped delay line and wave filter, and described tapped delay line connects coarse delay unit, and described wave filter connects Doppler modulator.
2. a kind of radar echo simulator according to claim 1, is characterized in that: the delay precision of described coarse delay unit is 16/3ns.
3. a kind of radar echo simulator according to claim 1, is characterized in that: the delay precision of described smart delay cell is 1/3ns.
4. a kind of radar echo simulator according to claim 1, is characterized in that: described computing machine is human-computer interaction device, sends that the scattering of target echo is counted, one-dimensional range profile number and interval to Doppler modulator.
5. a kind of radar echo simulator according to claim 4, is characterized in that: to Doppler modulator, described computing machine sends that the scattering of target echo counts is 200, and the maximum spacing of scattering point is 2 meters.
6. a kind of radar echo simulator according to claim 1, is characterized in that: be also connected with the frequency of the radar signal detecting A/D converter output, amplitude, pulse width and the measurement detection equipment in cycle between described A/D converter and quadrature down converter.
7. a kind of radar echo simulator according to claim 6, is characterized in that: described measurement detection equipment comprises connected wave detector sum counter, and described wave detector is connected with A/D converter, and described counter is connected with quadrature down converter.
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| CN201420564855.2U CN204086526U (en) | 2014-09-28 | 2014-09-28 | A kind of radar echo simulator |
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| CN201420564855.2U CN204086526U (en) | 2014-09-28 | 2014-09-28 | A kind of radar echo simulator |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833962A (en) * | 2015-05-28 | 2015-08-12 | 北京润科通用技术有限公司 | Radar echo simulator test system |
| CN106643798A (en) * | 2016-12-22 | 2017-05-10 | 中国科学院光电技术研究所 | Visible light target simulation system |
| CN106841776A (en) * | 2017-03-28 | 2017-06-13 | 北京润科通用技术有限公司 | A kind of method of frequency measurement machine and measurement signal frequency |
| CN107271975A (en) * | 2017-06-16 | 2017-10-20 | 北京理工大学 | The radar return Doppler frequency coherent analogy method measured in real time based on frequency |
| CN107728127A (en) * | 2017-11-29 | 2018-02-23 | 湖南纳雷科技有限公司 | A kind of radar simulation test system |
| CN108872955A (en) * | 2018-06-22 | 2018-11-23 | 成都聚利中宇科技有限公司 | Radar echo signal analogy method and system |
| CN111007469A (en) * | 2019-12-25 | 2020-04-14 | 上海铭剑电子科技有限公司 | Receiver of radar simulator |
| CN111551905A (en) * | 2020-04-20 | 2020-08-18 | 北京无线电计量测试研究所 | Scattering point delay parameter calibration method and system |
| CN111624564A (en) * | 2020-05-27 | 2020-09-04 | 北京润科通用技术有限公司 | Radar pitch angle target simulation system and method |
| CN111856419A (en) * | 2020-07-30 | 2020-10-30 | 重庆市计量质量检测研究院 | Indoor positioning simulation method based on ultra-wideband radar |
| CN112799024A (en) * | 2020-12-25 | 2021-05-14 | 北京无线电计量测试研究所 | Fine delay method and device for multi-channel signal processing |
| CN115685110A (en) * | 2022-12-29 | 2023-02-03 | 北京华清瑞达科技有限公司 | High-precision delay control method for radar echo simulator |
| CN116718996A (en) * | 2023-08-10 | 2023-09-08 | 南京航天工业科技有限公司 | DRFM-based one-dimensional HRRP target simulation method and system |
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2014
- 2014-09-28 CN CN201420564855.2U patent/CN204086526U/en active Active
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833962B (en) * | 2015-05-28 | 2017-09-22 | 北京润科通用技术有限公司 | Radar echo simulator test system |
| CN104833962A (en) * | 2015-05-28 | 2015-08-12 | 北京润科通用技术有限公司 | Radar echo simulator test system |
| CN106643798A (en) * | 2016-12-22 | 2017-05-10 | 中国科学院光电技术研究所 | Visible light target simulation system |
| CN106841776B (en) * | 2017-03-28 | 2019-08-06 | 北京润科通用技术有限公司 | A kind of method of frequency measurement machine and measuring signal frequency |
| CN106841776A (en) * | 2017-03-28 | 2017-06-13 | 北京润科通用技术有限公司 | A kind of method of frequency measurement machine and measurement signal frequency |
| CN107271975A (en) * | 2017-06-16 | 2017-10-20 | 北京理工大学 | The radar return Doppler frequency coherent analogy method measured in real time based on frequency |
| CN107271975B (en) * | 2017-06-16 | 2018-10-09 | 北京理工大学 | The radar return Doppler frequency coherent analogy method measured in real time based on frequency |
| CN107728127A (en) * | 2017-11-29 | 2018-02-23 | 湖南纳雷科技有限公司 | A kind of radar simulation test system |
| CN108872955B (en) * | 2018-06-22 | 2021-11-23 | 成都聚利中宇科技有限公司 | Radar echo signal simulation method and system |
| CN108872955A (en) * | 2018-06-22 | 2018-11-23 | 成都聚利中宇科技有限公司 | Radar echo signal analogy method and system |
| CN111007469A (en) * | 2019-12-25 | 2020-04-14 | 上海铭剑电子科技有限公司 | Receiver of radar simulator |
| CN111551905A (en) * | 2020-04-20 | 2020-08-18 | 北京无线电计量测试研究所 | Scattering point delay parameter calibration method and system |
| CN111624564A (en) * | 2020-05-27 | 2020-09-04 | 北京润科通用技术有限公司 | Radar pitch angle target simulation system and method |
| CN111856419A (en) * | 2020-07-30 | 2020-10-30 | 重庆市计量质量检测研究院 | Indoor positioning simulation method based on ultra-wideband radar |
| CN112799024A (en) * | 2020-12-25 | 2021-05-14 | 北京无线电计量测试研究所 | Fine delay method and device for multi-channel signal processing |
| CN112799024B (en) * | 2020-12-25 | 2024-05-03 | 北京无线电计量测试研究所 | Fine delay method and device for multipath signal processing |
| CN115685110A (en) * | 2022-12-29 | 2023-02-03 | 北京华清瑞达科技有限公司 | High-precision delay control method for radar echo simulator |
| CN116718996A (en) * | 2023-08-10 | 2023-09-08 | 南京航天工业科技有限公司 | DRFM-based one-dimensional HRRP target simulation method and system |
| CN116718996B (en) * | 2023-08-10 | 2023-11-03 | 南京航天工业科技有限公司 | DRFM-based one-dimensional HRRP target simulation method and system |
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