This kind of TFD can tune its kernel ambiguity function shape by two dimensional optimization procedure according to the characteristics of the analyzed signal.

• 这种时频分布根据被分析信号不同特性,采用优化方法自适应对模糊函数进行整形,尽可能保留集中在原点的信号模糊函数的自分量,抑制远离原点的交叉分量。