Multi-component LFM radar emitter signal detection based on LWD

Based on local wave decomposition (LWD), a novel approach for detecting the multi-component linear frequency modulated (LFM) radar emitter signal is proposed in this paper. Every complex radar signal is decomposed into its intrinsic mode components, meanwhile the signal local characteristics are dynamically depicted by instantaneous frequencies. The presented approach can successfully abstract the local frequency features and envelop features of every component of the multi-component LFM radar signal, and estimate the numbers and frequency offsets of component signal of the complex radar signal. Theoretical analysis and experimental results indicate that the proposed approach is effective to analyze and detect the multi-component LFM radar emitter signal.