Radar Emitter Signal Intra-Pulse Feature Extraction Based on Empirical Mode Decomposition

Aiming at this problem that the analysis of instantaneous frequency for radar emitter signal(RES), based on empirical mode decomposition(EMD) the intra-pulse feature extraction method for RES is studied. Using empirical mode decomposition the normalized energy entropy (NeEn) feature is extracted. The experiment result displays that if the signal-to-noise ratio is greater than 12 dB, the feature shows only small fluctuations.