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对于采用固定窗或核的时频分布,其适用的信号形式具有很大的局限性。基于信号的核能克服这样的缺点,斜高斯核是其中一类,为了得到基于不同信号的最优斜高斯核,本文提出采用EM算法根据实际信号的模糊函数估计斜高斯核的参数,以达到核的最优设计。
For fixed-window or nuclear time-frequency distribution, the applicable signal form has great limitations. In order to get the optimal oblique Gaussian kernel based on different signals, this paper proposes to use the EM algorithm to estimate the parameters of oblique Gaussian kernel based on the ambiguity function of the actual signal in order to reach the core The optimal design.