一种抗间歇采样转发干扰的脉内自适应凹陷LFM波形设计方法

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中图分类号：TN95 文献标志码：A DOI：10.12305/j.issn.1001-506X.2025.04.08

Abstract： Interrupted sampling repeater jamming （ISRJ） is a type of active coherent jamming technology based on the principle of down-sampling.The traditional anti-ISRJ waveform optimization method has defects such as high solution complexity and damage to traditional waveform performance.Based on this，an intra-pulse adaptive sag waveform anti-ISRJ design method is proposed.Firstly，the time domain envelope of the original linear frequency modulation （LFM） waveform is designed by using the discontinuous sampling characteristics of theinterference time domain. Secondly，the intra-pulse adaptive time shift optimization is performed on the designed sag position.Finall，the waveform with anti-ISRJ effect is obtained.The proposed method does not require complex iterative optimization and can effectively use the diffrence of echo pulse compresson peaks to suppress ISRJ without losing the traditional LFM performance.The simulation results show that the designed waveform interference suppression performance is significantly improved compared with the traditional method.

Keywords： electronic countermeasures； interrupted sampling repeater jamming（ISRJ）；waveform design; interference suppression

0 引言

相参雷达，如脉冲压缩、脉冲多普勒等，利用其脉内或脉间波形的相参性，可以获得较高的相参处理增益，从而可以显著降低电子干扰的抑制或欺骗效果。（剩余19564字）