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Radar dense false target interference inhibition method

A dense false target and interference suppression technology, applied in the field of radar dense false target interference suppression, can solve problems such as insufficient research, gap between test verification and application, and gap in research depth, etc., to achieve simple principle, improve detection and recording tracking Ability to ensure the effect of normal detection

Active Publication Date: 2015-11-11
NANJING LES ELECTRONICS EQUIP CO LTD
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AI Technical Summary

Problems solved by technology

[0008] (2) The research is not systematic enough
At present, domestic research on new radar anti-jamming methods and new technologies is still relatively isolated, and there is still a big gap in the depth of research;
[0009] (3) There is a gap between test verification and application
Most of the theoretical research results of developed countries have been successfully applied to military equipment, realizing the actual combination of theoretical methods and equipment. Many new domestic theoretical methods have not yet been well integrated with weaponry and equipment.

Method used

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Embodiment

[0092] 1. Analyze the measured data of XX radar, the radar works in MTI system, the distance resolution unit is 30m, the distance unit is 4000 (a total of 120km), the antenna scans 6 revolutions per minute, the pulse repetition frequency is 300Hz, and the word length of the collected data is 8 bits (0-255 ). Divide the 360° area of ​​the radar scan into 4096 azimuth units, and obtain the mean value of the noise on each azimuth unit, that is, the azimuth noise power; the noise estimation is obtained by selecting the smallest data for all azimuth units. After calculation, the average value of the noise power is 18, and the radar azimuth noise power is shown in figure 2 .

[0093] 2. Perceive the interference environment: compare the noise power estimate of the azimuth with the threshold, the threshold is determined by the noise estimate, the noise estimate is 15, the threshold is 18, and the azimuth exceeding the threshold is considered to have interference. After calculation,...

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Abstract

The invention relates to a radar interference inhibition method and particularly relates to a radar dense false target interference inhibition method. The radar dens false target interference inhibition method comprises steps of importing orientation video data of an object to be detected which is scanned by the radar, calculating the orientation noise power of the object to be detected to obtain a noise evaluation value, recognizing interference, perceiving the interference environment and positioning the interference source, 3 identifying the interference, performing signal statistic analysis on the radar scanning video data in the interference field, determining whether the dense false object interference exists, 4 inhibiting the interference, adopting the frequency domain filtering technology to perform interference resistance processing on the dense false object interference data, 5 detecting an object, adopting CFAR to process the object data to be detected which has gone through anti-interference inhibition, and 6 performing tracing and track correlation on the object to be detected to finish the tracking of the object. The radar dense false target interference inhibition method can guarantee the normal operation of the radar under the interference of the dense false objects and identifies whether the false objects exist through the characteristic analysis.

Description

technical field [0001] This patent relates to a radar interference suppression method, in particular to a radar dense false target interference suppression method. Background technique [0002] An important feature of modern military electronic technology is that various weapons and equipment are more and more widely used and depend on radio technology. The display of the power of various weapons and equipment, the monitoring and alerting of theaters, the deployment, contact and control of various arms cooperative operations, etc., all rely more and more on the effectiveness of radar. Therefore, electronic warfare has become another dimension of modern warfare. On the battlefield, suppressive and deceptive active electronic jamming will run through the entire process of warfare, making radars face an increasingly complex electromagnetic environment. [0003] The comprehensive electronic jamming technology developed rapidly in recent years poses a serious threat to radar wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 龙超童建文潘望郑坚欧乐庆潘江华王寿峰赵春光汪洋孙宜斌章林付乾良陈凌孙超桂祎恂
Owner NANJING LES ELECTRONICS EQUIP CO LTD
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