New Method on Radar Reconnaissance Signals Separation for Multi-Sensor
WU Heng-zhou · Chuangan jishu xuebao · 2008
For most of the blind source separation methods are confined to stationary,nongaussian and mutually independent source signals,and the real radar signals always don't satisfy this condition.View to the nonstationarity of the signals that emitted by modern new radar system,we chose the method of Smoothed Pseudo Wigner-Ville time-frequency distribution and integrate joint-diagonalization to blind separate the radar signals that was reconnaissanced.From the result of simulation,both the correlation coefficient between estimate signals and sources were larger than 0.99,and the global error was confined to permission,this sufficiently implied that the method of time-frequency distribution can separate nonstationary signals under some special conditions completely,which provide evidence for radar reconnaissance signal's selection and recognization.