基于RPPT似然比的宽带雷达目标检测算法

Wideband Radar Target Detection Algorithm Based on Random Parameters Pulse Train Likelihood Rate

宽带雷达目标回波表现为距离扩展目标的形式,距离扩展目标检测技术是目前雷达信号处理领域的难点问题。本文从最佳匹配检测理论和高分辨率雷达目标回波特征出发,将目标上各散射点形成的在时域上分离的回波看成是具有随机参量的脉冲串信号,提出了适用于高分辨率雷达目标单次回波检测的随机参量脉冲串检测方法。仿真结果表明,在高分辨率雷达中,这种检测方法比雷达经典检测方法检测性能改善3dB以上。

The wideband radar echo is modeled as a range-spread target. So far, the range- spread target detection has been a difficult and crucial problem in the radar signal processing. By treating time domain separated echoes, caused by the scatters on the target, as a pulse train with random parameters, a new detection method is proposed for high-range-resolution radar target single detection based on the theory of optimum matching detection and the characteris- tic of target echoes in a high-range-resolution radar. Finally, the experimental results show that the new method improves at least 3 dB in detection performance compared with the tradi- tional detection method.