Identification method for complex modulated radar signals
Chao Zhang · Computer Engineering and Applications Journal · 2011
This paper proposes a method to identify the complex radar signals,such as phase-shift keying signal,frequency-shift keying signal and hybrid modulation signal.Based on the combination of AR model power spectrum estimation and modulus maxima of wavelet transform,the complex modulated signals are converted into phase-shift keying signals.Then the frequency characteristics of the signals are extracted by high-order spectrum analysis.Simulation results show that the proposed method can identify up to six kinds of complex radar signals,and most signals can achieve more than 93 recognition accuracy when SNR is above 0 dB.