一种基于时频空特征的雷达主瓣干扰检测方法

A method of radar main lobe jamming detection based on time-frequency-space features

雷达主瓣干扰是影响雷达发挥效能的重要威胁,从雷达干扰机工作原理出发,分析有源干扰在雷达信号中的不同特征,提出一种基于时频空特征的雷达主瓣干扰检测方法.该方法针对干扰与目标信号的时空分布和时频分布特性的差异作为特征量进行分析和验证,分别利用时空分析和时频分析方法对典型的远距离自然场景、压制干扰和欺骗干扰等不同类型的干扰进行检测和验证,为雷达有源干扰检测提供了一种新的方法.

Radar main lobe jamming is an important threat to radar performance.Based on the working principle of radar jammers,this paper analyzes the different characteristics of active jamming in radar signal,and proposes a detection method of radar main lobe jamming based on time-frequency-space characteristics.This method is used to analyze and verify the difference of time-space distribution and time-frequency distribution between jamming and target signal.The methods of spatiotemporal analysis and time-frequency analysis are respectively used to detect and verify different types of interference such as typical remote natural scenes,suppression jamming and deception jamming,thus providing a new method for radar active jamming detection.