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Radar network anti-distance deception + soj compound jamming method

A radar network and distance technology, which is applied in the field of radar network tracking of targets, can solve the problems of reduced detection probability of real targets, many false targets, and the inability of radar networks to track targets stably.

Inactive Publication Date: 2018-09-28
NAVAL AVIATION UNIV
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  • Description
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  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to propose a radar network anti-distance deception+SOJ compound interference method to solve the problem that the radar network cannot stably track the target due to the large number of false targets and the decline in the detection probability of the real target under such compound interference

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  • Radar network anti-distance deception + soj compound jamming method
  • Radar network anti-distance deception + soj compound jamming method
  • Radar network anti-distance deception + soj compound jamming method

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Embodiment Construction

[0101] The radar network anti-distance spoofing + SOJ composite jamming method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0102] Embodiment conditions: three radar position coordinates are respectively (0,0,0), (5×10 4 ,0,0), (1.2×10 5 ,0,0), the starting position of the real target is (3×10 4 ,10 5 ,1.5×10 4 ), the unit is m; the moving speed of the target in the directions of the three coordinate axes of X, Y, and Z is (380, -200, -25), the unit is m / s, and the continuous observation of the target is 200s; the sampling period of the three radars is The range measurement accuracy is 100m, and the angle measurement accuracy is 0.1rad; the number of Monte Carlo simulations is 300 times, and a false distance target is generated every 1500m on both sides of the real target, and a total of 6 false targets are generated. , 3 on each side, and the real target disappears with a probability of 0.9. The specific step...

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Abstract

The invention discloses a radar net distance deception + SOJ (stand-off jamming) resisting method, belongs to the technical field of radar net jamming resistance, and aims to improve the anti-jamming performance of a radar net. Deception resistance + SOJ is typical composite jamming and seriously affects detection and tracking of the radar net for a target. The method mainly includes the steps: firstly, inputting data of radars to a radar data processing computer; secondly, performing measurement grouping for the radars by the aid of extremely similar characteristics of false target angle information and true target angle information; thirdly, compressing azimuth angle and pitching angle data of each measurement group; fourthly, associating the measurement groups of different radars; fifthly, building equivalent measurement based on the least square method; sixthly, tracking the target by the aid of the equivalent measurement. The method solves the problems of wrong target tracking and filter divergence as only false targets are detected and true targets are missed under the composite jamming, and has the advantages of easiness in implementation, fine stability and engineering application prospect and the like.

Description

1. Technical field [0001] The invention belongs to the technical field of radar network anti-jamming, and is suitable for tracking the target by the radar network when range deception jamming and long-distance support jamming (SOJ) exist. 2. Background technology [0002] With the increasingly fierce electronic countermeasures in modern warfare, the living environment of radars has become very harsh. Compared with single radars, radar nets have stronger "four resistance capabilities". Various jamming techniques, among which the organic combination of distance deception and long-range support jamming (SOJ) is a typical composite jamming, which will reduce the detection probability of the target, and at the same time provide a large amount of false distance information to the radar, making the radar network very difficult. Difficult to track the target stably. The current typical anti-compound jamming technology is "PR-based radar anti-composite jamming technology". This meth...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/36
CPCG01S7/36G01S7/41
Inventor 王国宏孙殿星吴巍李世忠于洪波
Owner NAVAL AVIATION UNIV