针对采用传统测向方法的被动雷达导引头(PRS)对抗多点源诱偏系统效果不理想的情况, 提出了一种基于时域鉴别技术和小波分析的前沿判别法。由PRS使用固定波门对辐射源脉冲前沿进行采样, 对所得信号作小波分析和特征提取, 当判定采样信号内为单辐射源信号时对其进行测频、测向、跟踪和打击。以正三角形布阵的三点源诱偏系统为例, 仿真分析了该方法的可用性, 结果表明在大部分空域中, PRS总能跟踪提前到达的诱饵信号, 从而验证了该方法能够有效对抗三点源诱偏系统。

Aiming at the problem that the tradition passive radar seeker (PRS) can hardly counter multi-source decoy radar system effectively we proposed a pulse leading-edge distinguishing technique based on time discrimination technique and wavelet analysis. PRS uses fixed strobe gate to sample the pulse leading-edge and wavelet analysis and feature extraction are made to the signals obtained. After the analysis result verifies that the sample includes only single radiation source the PRS can measure the sample signal direction and its frequency track the sample signal and attack the source target. Taking three-source decoy radar system with triangular deployment as an example the usability of this technique was simulated and analyzed. It is verified that the PRS can track the early arriving decoy signal in most position of the airspace which verifies that this technique can effectively counter three-source decoy radar system.