Missile-borne forwarding type interference inhibition method based on false target characteristics

Abstract

The invention discloses a missile-borne forwarding type interference inhibition method based on false target characteristics. The method comprises the following steps: step one, arranging a noise basal threshold, a distance threshold scope between false targets and a false target spectrum peak width threshold in advance; step two, when an environment where a radar is disposed is not changed, executing step three, and otherwise, returning to step one; step three, periodically counting a noise background where the radar works, performing pulse pressure matching on echo data received by the radar, processing the echo data whose signal-to-noise ratio exceeds a preset detection threshold, and making true and false target marks on point track data; and step four, for the point track data with already marked true and false targets, according to target associations before and after current time, rejecting the false targets, and forming a true target track. According to the invention, through control of adjustable parameters among three characteristic parameter thresholds including the noise background, the distance interval of the false targets and a false target spectrum peak broadening width, the probability of correctly rejecting the false targets can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of radar anti-jamming, in particular to a bomb-borne forwarding interference suppression method based on false target characteristics. Background technique [0002] With the rapid development of electronic technology, especially DRFM (Digital Radio Frequency Memory) technology is increasingly used to generate false targets to interfere with radar. Dense forwarding jamming based on DRFM technology can capture and store received radar signals and specially modulated signal waveforms with high fidelity, can accurately replicate the original radar signal, and add frequency shift, time delay and other modulation to the replicated signal and repeat the transmission. Generate high-fidelity deception signals to form a large number of false distance target strings on the radial distance, thereby completing the jamming of the radar. This type of interference not only consumes a large amount of radar signal processing...

AI Technical Summary

Problems solved by technology

When this type of interference enters from the main lobe of the radar, the radar cannot distinguish between real and false targets through the airspace, and dense real and false targets will appear in the direction of the main lobe on the radar display. The radar cannot distinguish between real and false targets, resulting in false alarms improve

[0004] Since the bomb-borne jammer is equipped on the bomb, the volume space is limited, and the isolation between sending and receiving is not high. This determines that the bomb-borne jamming machine cannot transmit and receive at the same time, and can only detect and interfere alternately.

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