不同时频分析方法综合检测信号

Signal Detection By Different Time-Frequency Analysis Method Synthesis

本文讨论了不同时频分析方法的性能,线性时频分析方法稳健,但精度有限;非线性时频分析方法如:威格纳分布精度高,但是不稳健,对噪声敏感,多信号情况下存在交叉项的问题。本文将线性和非线性的时频分析方法结果按照与的规则进行综合,得到了稳健的高分辨的时频分布结果。

We discuss on the performance of several time-frequency analysis methods for signal detection here. Linear time-frequency analysis methods are robust, but its resolution is limited. Nonlinear time-frequency analysis methods with good resolution are not robust. On the other, Nonlinear methods suffer from cross-term for multi-signal. Nonlinear and linear time-frequency analysis method synthesis can obtain robust result with good resolution.