Being the manner which treats the broadband advance detection signal the system and the mannered null passive coherent search which treat,

摘要

PROBLEM TO BE SOLVED: To provide a system and method for processing a wideband signal detected in advance for PCL applications.;SOLUTION: The method includes receiving an input signal, implementing a transformation operation on the input signal, compensating the input signal for channel distortion, demodulating and forming complex-valued representations. The reference signal and target signal are estimated from the demodulated signal. To reduce part of the reference signal within this target signal, the reference signal is adaptively-filtered depending on target signal and then combined with the target signal to reduce a part of the reference signal. Reverse conversion operation is done for these target signal and reference signal to form plural target beams for the output target signal. For each of these target beams, two or more thinned lag products are formed. Also for the reference signal, two or more thinned lag products are formed. Cross Ambiguity Function is estimated for each of those plural target beams. Then the above two or more thinned lag products for the reference signal are used to estimate Auto Ambiguity Function for the reference signal.;COPYRIGHT: (C)2010,JPO&INPIT