Detection and Separation of Multi-component Radar Emitter Signal
Xiaofeng Wang, Guoyi Zhang, Lijun Qi · Advances in engineering research/Advances in Engineering Research · 2015
The problem of multi-component radar emitter signal processing is studied, an effective method based on time-varying filtering is proposed to detect and separate the multi-component signal in radar reconnaissance occasion.Each signal component in the time-frequency plane is detected by the region growing method which is an image segmentation algorithm.Firstly, the linear frequency modulation (LFM) components in the multi-component signal are separated by fractional Fourier transform (FRFT).And then, the components which don't interact in the time or frequency domains are filtered.Finally, the components which interact in the time-frequency domains are separated by the support vector machine (SVM).Simulation results show that the proposed method can detect and separate multi-component signal effectively.