A novel recognition method for hybrid modulation radar signals

This paper proposes a method to identify the hybrid modulation signals. Firstly, the method utilizes instantaneous frequency (IF) of signals combined with histogram to classify conventional signals and hybrid modulation signals. Then an improved signal segmentation method is used to resolve the hybrid modulation signals to conventional signals. Experimental results show that the proposed method can identify seven kinds of typical radar signals, and achieve 94% recognition accuracy when SNR is 3dB.