Application of S-method to Multi-component Emitter Signals

S-method (SM) is an effective time-frequency distribution for multi-component analysis. It keeps high time- frequency resolution and removes cross-term among components. So, this paper applies SM to process multi-component emitter signals. First, the factors that affect the performance of SM are discussed. Then, an on-line multi-component emitter signal analysis method is given to process the intercepted emitter signal continuously. At last, SM is used to analyze a manmade multi- component emitter signal. The cross-term reduction performance and noise suppression ability of SM is considered in the experiment. Experimental results show that SM is an effective multi-component emitter signal analysis method with good performances of owning high time-frequency resolution, avoiding cross-term among components and keeping good analysis ability at low signal to noise ratio.