Reassignment-Based Frequency Hopping Signal Time-Frequency Analysis
BU Wei-dong · Communication Countermeasures · 2007
The FH signal is a non-stationary signal, One of the effective methods of analysis of FH is time-frequency analysis. But, for the uncertain theory, the time and the frequency distinguishing can not reach well in the same time, it is not propitious to the select of the signal and the estimation of the parameters. In this paper, the reassignment method is used to adjust the time-frequency spectrum.The simulations indicate that the spectrum of the reassignment has well time frequency collective feature for FH signal and it can get about 6 dB gain for the Frequency Reassignment Losing(RL). It is propitious to the select of the signal and the estimation of the parameters.