Self-adaption anti-deception system and self-adaption anti-deception method for resisting active decoy jamming

Abstract

The invention discloses a self-adaption anti-deception system and a self-adaption anti-deception method for resisting active decoy jamming. A radar transmitting module generates and transmits deceptive pulse signals and real signals according to radar signal parameters; a radar receiving module simultaneously receives target echo targets and active decoy jamming signals transmitted by a jammer; a signal processing module performs pulse compression and detection on the received signals and calculates a difference value between a target gain and a surrounding clutter or jamming gain; an adaptive algorithm module judges whether the gain difference value is in accordance with an expected value or not, the radar signal parameters obtained in a last period are transmitted to the radar transmitting module if the gain difference value is in accordance with the expected value, and otherwise, new radar signal parameters are calculated according to the gain difference value by adoption of a self-adaption algorithm and transmitted to the radar transmitting module. The self-adaption anti-deception system and the self-adaption anti-deception method for resisting active decoy jamming have advantages that jamming correlation is destroyed to weaken jamming effects from the source, the jammer is disabled to intercept real radar pulse signals, and anti-jamming effects are improved.

Description

technical field [0001] The invention relates to the field of electronic countermeasures, in particular to an adaptive anti-spoofing system against active false target interference and an anti-spoofing method thereof. Background technique [0002] With the development of digital radio frequency storage DRFM technology, active false target jamming is becoming more and more diverse. In addition to the false target jamming method commonly used in hardware applications by aliasing filtering, the new false target jamming Smeared Spectrum (SMSP) for linear frequency modulation signals ) and Chopping and Interleaving (C&I) interference also came into being. At present, only relying on radar operators to manually press points according to experience can no longer meet the requirements of real-time and accuracy, so intelligent anti-jamming measures must be adopted. [0003] Generally, anti-false target interference starts from the perspective of signal processing, such as feature ext...

AI Technical Summary

Problems solved by technology

However, the detection time of the enemy jammer cannot be determined. It is easy to detect the real signal emitted by the radar, and the effect of interference suppression is not obvious.

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