Blind parameters estimation of frequency-hopping signals based on reassignment time-scale distribution
Xing Wang · Journal of Circuits and Systems · 2013
A novel method for intercepting LPI frequency hopping(FH) signal is presented,which based on reassignment time-scale distribution.This method can exactly extract and estimate the parameters of non-cooperative FH signals,such as hop duration,hop timing and hopping frequencies without knowing any a prior knowledge.Analysis results of FH signals using scalogram and reassigned scalogram are compared,and the parameter estimating algorithm is given based on reassigned scalogram.Exact extracting results are obtained by computer simulating and good performances of this algorithm are shown through analyzing the results.