摘要
本文提出了一种基于高阶统计量的小波去噪的瞬态信号检测方法,这种检测方法结合了小波包多分辨率分析和高阶量的抗高斯干扰特性,因而优于传统的能量检测方法。仿真研究和实验数据处理结果表明,在较低信噪比时,能量检测失效,本检测方法使得检测工作得以继续。
In this article, a detection method of acoustic transient signal is presented, this method combine the two powerful tool for transient signal detection: wavelet packets and HOS. An algorithm of de-noising using wavelet packets based on four-order-statistic is developed. The results show that the detector based on this method performs better than the adapted energy detector, especially in the low SNR case.
出处
《信号处理》
CSCD
北大核心
2005年第2期126-130,共5页
Journal of Signal Processing
基金
海军预先研究资助项目(41303080108)资助
