基于重排Gabor谱方法的跳频信号参数估计

对接收到的跳频信号进行时频分析是跳频信号参数估计的重要步骤。利用重排方法对信号的时频谱图进行重排，有效地抑制了交叉干扰项，提高了信号的时频聚集性并且改善了信号时频谱图的可读性。对跳频信号的Gabor谱进行重排，能够在低信噪比条件下估计出跳频信号的跳频周期、跳变时刻和跳频频率等参数。仿真结果表明，与Gabor谱方法比较，采用重。排Gabor谱方法对跳频信号进行分析，提高了跳频信号的跳频周期和跳变时刻估计的准确性。

Parameter Estimation of Frequency-Hopping. Signals Based on Reassignment Gabor Spectrum Method

It is an important approach to make time-frequency analysis of received FH signals in order to estimate the parameters of FH signals.The method of reassignment time-frequency spectrum reduces or completely removes the cross-terms and diffuses other signal components,enhances the time-frequency aggregation of the signals and improves the readability of time-frequency representation. With reassignment Gabor spectrum method of FH signals,the method can estimate its transmission parameters such as hop duration,...