摘要
利用小波变换对平稳随机过程进行了谱分析，在小波变换的基础上给出了平稳随机过程的时—频功率谱及联合平稳随机过程的时—频互功率谱的概念，并详尽地研究了它们所具有的性质及与传统功率谱的关系·
The spectral analysis of stationary random processes is studied by using wavelet transform method. On the basis of wavelet transform, the conception of time_frequency power spectral density of random processes and time_frequency cross_spectral density of jointly stationary random processes are presented. The characters of the time_frequency power spectral density and its relationship with traditional power spectral density are also studied in details.
出处
《应用数学和力学》
CSCD
北大核心
1998年第10期859-864,共6页
Applied Mathematics and Mechanics
基金
国家教委博士点基金
