一种基于短时间窗幅度变化的雷达扫描方式识别

摘要

随着雷达扫描侦察接收机接收的信号强度起伏变化，截获的雷达信号强度与时间的关系曲线图蕴含了雷达扫描方式的信息。通过建立接收机侦察截获模型，结合雷达天线方向图，得到了两坐标、三坐标和相控阵三种不同体制雷达典型扫描方式下接收机侦收到信号的幅度变化图，采用动态峰值搜索的方法估计扫描周期。在此基础上，基于峰值附近时间窗内相邻幅度差的均值变化规律识别雷达的扫描方式。通过仿真计算的方式验证其合理性，为雷达扫描方式及技术体制的识别提供了一种方法。%The signal intensity-time curve is received by the reconnaissance receiver, which contains the information of radar scanning type. Through the establishment of reconnaissance and interception model, the amplitude variation charts of receiving signals from tree kinds of different system radars with typical scanning type are obtained combined with the radar antenna pattern. Based on the estimation of the antenna scan periods by the dynamic peak search method, the ra-tionality of the algorithm to recognise radar scanning type is shown with simulation experiments using mean change rules of adjacent amplitude data near the peak and within different time win-dows. A recognition method of radar scanning type and radar technical system is proposed.