CN104777459A - Radar anti-interference system - Google Patents
Radar anti-interference system Download PDFInfo
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- CN104777459A CN104777459A CN201510201218.8A CN201510201218A CN104777459A CN 104777459 A CN104777459 A CN 104777459A CN 201510201218 A CN201510201218 A CN 201510201218A CN 104777459 A CN104777459 A CN 104777459A
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- interference
- radar
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- investigation
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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
- G01S7/36—Means for anti-jamming, e.g. ECCM, i.e. electronic counter-counter measures
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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 invention discloses a radar anti-interference system. The radar anti-interference system comprises a radar receiver, a frequency mixer, an intermediate frequency amplifier, a radar transmitter, an interference investigation processing unit, a main control chip, a distance tracking unit and a modulator. The interference investigation processing unit comprises an interference investigation module and an interference processing unit. The interference investigation module comprises a CFAR detector and an orthogonal two-channel coherent detector. The interference processing unit comprises a canceller, a Doppler filter and a constant false-alarm rate processor. The output end of the radar receiver is connected with the input end of the interference investigation processing unit and the input end of the distance tracking unit through the frequency mixer and the intermediate frequency amplifier in sequence. The radar anti-interference system is easy to operate and high in reliability, distance signals of sum beams are modified through the distance tracking unit, the interference investigation processing unit is used for investigating and processing interference signals, the target detection distance is prolonged, the anti-interference capacity of radar is enhanced, and the practical application prospect is wide.
Description
Technical field
The present invention relates to communication technical field, specifically a kind of Radar cross-section redaction system.
Background technology
In the last few years, due to the development of electronic technology, and be also growing more intense in the anti-interference struggle of electronic countermeasure, the interference faced at the radar in modern times can be divided into natural radio interference and the large class of artificial radio interference two, therefore want the requirement of the Anti-Jamming Technique reply development of development radar, improve the security level of self.Be 201110060728.X in " a kind of method of Radar cross-section redaction " Chinese patent of application on 03 15th, 2011 at application number, when it sends the interference electromagnetic wave identical with the second radar initial polarization mode by the first radar to the second radar, a metamaterial polarization transformer is set between the reflecting surface and feed of the second radar, in order to change the interference polarization of electromagnetic wave mode that the first radar sends, and the polarization mode communication after polarization converter conversion used instead by the second radar.Although this Radar cross-section redaction mode is simple, along with electronic product is to high level and high-tech future development, this can not meet the request for utilization of modern society.
Summary of the invention
The object of the present invention is to provide a kind of simple to operate, Radar cross-section redaction system that reliability is strong, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of Radar cross-section redaction system, comprise radar receiver, frequency mixer, intermediate frequency amplifier, radar transmitter, interference investigation processing unit, main control chip, range-tracking element and modulator, described interference investigation processing unit comprises interference investigation module and interference processing module, interference investigation module comprises CFAR detecting device and orthogonal double channels coherent detector, interference processing module comprises canceller, Doppler filter and CFAR processor, the output terminal of described radar receiver is connected the interference investigation input end of processing module and the input end of range-tracking element respectively by frequency mixer and intermediate frequency amplifier successively, the described interference investigation output terminal of processing module and the output terminal of range-tracking element are all connected the input end of main control chip, the output terminal of main control chip connects the input end of radar transmitter by modulator.
As the present invention's further scheme: the output terminal of described main control chip is also connected with display unit and storage unit.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention is simple to operate, reliability is strong, utilize the distance signal of range-tracking element amendment and wave beam, utilize interference investigation processing unit carry out investigations to undesired signal and process, improve target detection distance, enhance the antijamming capability of radar, there is wide actual application prospect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
Refer to Fig. 1, a kind of Radar cross-section redaction system, comprise radar receiver, frequency mixer, intermediate frequency amplifier, radar transmitter, interference investigation processing unit, main control chip, range-tracking element and modulator, described interference investigation processing unit comprises interference investigation module and interference processing module, interference investigation module comprises CFAR detecting device and orthogonal double channels coherent detector, interference processing module comprises canceller, Doppler filter and CFAR processor, the output terminal of described radar receiver is connected the interference investigation input end of processing module and the input end of range-tracking element respectively by frequency mixer and intermediate frequency amplifier successively, the described interference investigation output terminal of processing module and the output terminal of range-tracking element are all connected the input end of main control chip, the output terminal of main control chip connects the input end of radar transmitter by modulator, the output terminal of described main control chip is also connected with display unit and storage unit.
Described radar receiver is by radar antenna receiving cable data and space-time data, this channel data and space-time data detect through the investigation of CFAR detecting device and orthogonal double channels coherent detector the direction of arrival obtaining disturbing, formed interference radiating way with wave beam and be transferred to range-tracking element and interference processing module, add to range-tracking element with beam pulses and produce circuit, first short-period sawtooth voltage is formed, ripple door trigger pulse is formed when sawtooth voltage is equal, tracking gate before and after exporting through shaping with after delaying, due to sawtooth voltage again search condition time be linear gradient, therefore when search condition, front and back tracking gate is also by nearly extremely uniform motion far away, when current rear tracking gate overlaps with echo-pulse, the distance voltage signal that range-tracking element auto modification exports, interference processing module utilizes canceller, Doppler filter and CFAR processor carry out offseting process.
The present invention is simple to operate, reliability is strong, utilize the distance signal of range-tracking element amendment and wave beam, utilize interference investigation processing unit carry out investigations to undesired signal and process, improve target detection distance, enhance the antijamming capability of radar, there is wide actual application prospect.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (2)
1. a Radar cross-section redaction system, it is characterized in that, comprise radar receiver, frequency mixer, intermediate frequency amplifier, radar transmitter, interference investigation processing unit, main control chip, range-tracking element and modulator, described interference investigation processing unit comprises interference investigation module and interference processing module, interference investigation module comprises CFAR detecting device and orthogonal double channels coherent detector, interference processing module comprises canceller, Doppler filter and CFAR processor, the output terminal of described radar receiver is connected the interference investigation input end of processing module and the input end of range-tracking element respectively by frequency mixer and intermediate frequency amplifier successively, the described interference investigation output terminal of processing module and the output terminal of range-tracking element are all connected the input end of main control chip, the output terminal of main control chip connects the input end of radar transmitter by modulator.
2. Radar cross-section redaction system according to claim 1, is characterized in that, the output terminal of described main control chip is also connected with display unit and storage unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201218.8A CN104777459A (en) | 2015-04-24 | 2015-04-24 | Radar anti-interference system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201218.8A CN104777459A (en) | 2015-04-24 | 2015-04-24 | Radar anti-interference system |
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| CN104777459A true CN104777459A (en) | 2015-07-15 |
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| CN201510201218.8A Pending CN104777459A (en) | 2015-04-24 | 2015-04-24 | Radar anti-interference system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106814356A (en) * | 2017-01-24 | 2017-06-09 | 成都泰格微电子研究所有限责任公司 | It is a kind of based on Radar Signal Processing System apart from tracing subsystem |
| CN114966659A (en) * | 2022-06-06 | 2022-08-30 | 扬州宇安电子科技有限公司 | Radar target detection system and method based on machine learning |
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| CN104076352A (en) * | 2014-06-27 | 2014-10-01 | 电子科技大学 | Low-interception speed measurement method and radar device |
| CN104166125A (en) * | 2014-08-13 | 2014-11-26 | 芜湖航飞科技股份有限公司 | Radar anti-interference technology |
| CN104267411A (en) * | 2014-08-13 | 2015-01-07 | 芜湖航飞科技股份有限公司 | New anti-interference technology for adaptive digital beam forming |
| CN104391278A (en) * | 2014-09-02 | 2015-03-04 | 武汉滨湖电子有限责任公司 | Radar anti-interference method by utilizing polarization cancellation |
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2015
- 2015-04-24 CN CN201510201218.8A patent/CN104777459A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104076352A (en) * | 2014-06-27 | 2014-10-01 | 电子科技大学 | Low-interception speed measurement method and radar device |
| CN104166125A (en) * | 2014-08-13 | 2014-11-26 | 芜湖航飞科技股份有限公司 | Radar anti-interference technology |
| CN104267411A (en) * | 2014-08-13 | 2015-01-07 | 芜湖航飞科技股份有限公司 | New anti-interference technology for adaptive digital beam forming |
| CN104391278A (en) * | 2014-09-02 | 2015-03-04 | 武汉滨湖电子有限责任公司 | Radar anti-interference method by utilizing polarization cancellation |
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| 李尚轩: "脉冲多普勒雷达信号处理技术研究", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106814356A (en) * | 2017-01-24 | 2017-06-09 | 成都泰格微电子研究所有限责任公司 | It is a kind of based on Radar Signal Processing System apart from tracing subsystem |
| CN114966659A (en) * | 2022-06-06 | 2022-08-30 | 扬州宇安电子科技有限公司 | Radar target detection system and method based on machine learning |
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Application publication date: 20150715 |
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