摘要
在未知瞬态信号检测中，一般采用广义似然比检测。然而广义似然比检测不能有效利用瞬态信号的固有特性，检测性能不是很好。文中在介绍瞬态信号和噪声的小波变换特性基础上，提出了基于小波变换域估计的检测方法，最后给出了几种检测器的工作特性比较。
To detect unknown signals,we usually use the generalized likelihood ration test(GLRT).However,the performance of the GLRT is not very good since it does not adequately use the intrinsic characteristic of transients.By introducing the wavelet transform property of transients and noise, this paper presents one method based on the estimation in wavelet tranform domain(EWD).Finally,a comparison between the receiver operating characteristics(ROC)of several detectors is made.
出处
《电子科技》
1998年第2期21-23,27,共4页
Electronic Science and Technology
