An anti-velocity deception jamming method for airborne pulse Doppler radar

Abstract

The invention belongs to the anti-interference technique for design of an airborne pulse Doppler radar system, and relates to a radar single-target velocity deception interference resisting method. The radar single-target velocity deception interference resisting method comprises the following steps of 1, enabling a radar to detect and track a target, obtaining the frequency of a single-target point tracking center, dividing by 1,000, converting into kHz, and recording as f0; 2, in the tracking process, when one target point is tracked, setting the tracking as the normal single-target point tracking, and directly finishing; 3, utilizing a weighting coefficient method to calculate the frequency weight of a plurality of target points; (1) solving the weight; (2) solving the weighting frequency and fsum=fmu*bmu+fjam*bjam; (3) solving the weighting coefficient and csum=bmu+bjam; (4) solving the weighting result: as shown in the attached figure; 4 sending the weighting result to a radar tracking center. The method has the advantages that the identifying of the deception interference is not needed, the interference information and the target information are inputted together to process, and the velocity deception interference can be resisted; the velocity deception interference can be effectively resisted, and the target is reliably and accurately tracked; the calculation amount is less, the operation speed is high, and the portability is high.

Description

technical field [0001] The invention belongs to the anti-jamming technology in the design of an airborne pulse Doppler radar system, and relates to a radar single-target anti-speed deception jamming method. Background technique [0002] Speed ​​deception jamming is usually Doppler frequency jamming. The basic principle is: according to the received radar signal, the jammer simultaneously retransmits several jamming signals different from the target echo Doppler frequency fd, so that the speed tracking circuit of the radar simultaneously detects To multiple Doppler frequencies, or it is difficult to detect the fd of the real target, which affects the normal detection and tracking. Compared with the real target, an effective speed deception jamming signal has two obvious characteristics: 1. The Doppler frequency is different from the real target; 2. The signal power is stronger than or equal to the real target. [0003] When the radar is in a state of continuous tracking of t...

AI Technical Summary

Problems solved by technology

This makes the radar susceptible to jamming and cannot maintain stable tracking

[0009] Anti-speed deception jamming method, "Radar Science and Technology", April 02, 2004 "Kohonen network used in radar anti-speed deception jamming feature extraction", "System Engineering and Electronic Technology", Volume 23, No. 5, 2001 "Moving target detection under speed dragging" and "Electronic Information Countermeasure Technology" Issue 3, Volume 22, May 2007, "Recognition Methods for Distance-Speed ​​Deception Interference" and other articles have been studied, and some specific methods have also been proposed. However, these methods mostly stay in computer simulation analysis, and are based on pre-determining whether it is a target or interference, and then processing it, and have not been applied in the actual radar system

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