多调频广播外辐射源雷达目标探测实验研究

Experimental Study on Target Detection for Multi-FM Broadcasting Based Passive Radar

该文针对单调频广播外辐射源雷达面临的带宽时变及RCS闪烁等问题,研究了多调频信号联合探测的实验方案,并利用武汉大学研制的多调频外辐射源雷达系统开展了外场实验验证。首先,阐述了多调频广播外辐射源雷达的工作原理。然后,分析了多调频广播信号特性,论证了利用多调频信号联合探测的必要性和优越性。最后,重点展示了实测数据的处理结果。研究表明:多调频探测方案能大幅提高目标检测概率,提升调频外辐射源雷达探测稳健性,外场实验验证了该方案的可行性。

FM based passive radar faces some issues such as time varying bandwidth and RCS glint, a multiple FM joint detection scheme is proposed, and the corresponding experiments with passive radar system developed by Wuhan University are carried out. First, the process flow of multi-FM based Passive Radar is introduced. Then, the signal characteristics of multi-FM for radar application are analyzed, meanwhile, the necessity and advantages of multi-FM scheme are demonstrated. Finally, the practical processing results are presented. Experiment result proves that multiple frequency detection scheme can substantially improve target detection performance, enhanceing the robustness of passive radar system.