摘要
为提高微弱信号检测概率,提出了一种应用小波变换和双谱分析的方法。利用小波变换减少大部分随机噪声,提高信噪比,再进行双谱分析,获得比功率谱更丰富的信息,抑制高斯噪声,提高检测概率。通过模型计算和验证,证明了该方法的可行性和有效性。
In order to enhance the ratio of detection of weak signals, the wavelet transform and bispectrum analysis are applied. Wavelet transform could remove most random noise and improve noise-signal ratio. Bispectrum analysis can get more information than spectrum density and suppress Gauss noise. The results of real data processing with a model show the availability and feasibility of the method.
出处
《电声技术》
2009年第6期60-62,共3页
Audio Engineering
关键词
微弱信号
小波变换
去噪
双谱
weak signal
wavelet transform
denoising
bispectrum
