摘要
本文提出了一种提取信号功率谱中连续谱和线谱特征的新方法，该方法利用进化规划实现连续谱的最佳非线性曲线拟合，从而获得连续谱的轮廓特征及线谱的位置和相对强度，并将该方法用于被动声纳信号和振动信号的处理和分析，应用结果表明本文提出的方法能准确有效地提取信号功率谱的特征。
In this paper,a new method for extracting line spectrum and continuous spectrum from signal power spectrum is proposed.This method uses Evolutionary Programming algorithm to realize the optimum nonlinear curve fit of continuous spectrum,so that the features of continuous spectrum shape and line spectum distribution and amplitude can be obtained.At last,this method is applied to analysis of passive sonar signal and vibration signal,and the application results show the effectiveness and precision of this method.
出处
《电路与系统学报》
CSCD
1998年第3期92-97,共6页
Journal of Circuits and Systems
基金
国家自然科学基金
中国博士后科学基金
国家教委博士点基金
关键词
信号功率谱
进化规划
连续谱
线谱
特征提取
Signal power spectrum,Evolutionary programming,Continuous spectrum,Line spectrum,Feature extraction
