Blind Parameter Estimation of Frequency-Hopping Signals Based on the Time-Frequency Distribution Maxima

To estimate the parameters of unknown frequency-hopping(FH) signals,a blind parameters estimation method for FH signals based on time-frequency distribution maxima is proposed.Due to the transient frequencies of FH signals,the hop period can be estimated accurately via the wavelet transform of the time-frequency distribution maxima of a FH signal.The switching time instants and the hopping frequencies can be estimated accordingly.The theoretical analysis and simulation result show that the method can accurately estimate the parameters of FH signals with a low computational complexity.The performance of this method is superior to the current existing method.