1) wavelet packet time-frequency analysis
小波包时频分析
1.
Based on two typical methods for analyzing nonstationary signals,the wavelet packet transform and the short time Fourier transform(STFT),a method named wavelet packet time-frequency analysis(WPTFA) was put forward.
证明了小波包时频分析的能量守恒性,形成了一套较完善的分析体系。
2) Wavelet Package Time-Frequency Distribution
小波包时-频分布
3) time-frequency and wavelet analysis
时频-小波分析
1.
Stall inception and development have been studied using the method of time-frequency and wavelet analysis on the pressure signal from an eight-stage compressor engine.
采用时频-小波分析法对某型发动机的八级轴流压气机级间压力信号的失速先兆及发展信息进行了分析,检验了失速时刻信号的奇异值。
5) wavelet packet time-frequency component spectrum
小波包时频分量谱
1.
Four concepts related to the WPTFA method were defined,which were wavelet packet time-frequency component spectrum,amplitude spectrum of wavelet packet time-frequency component,wavelet packet time-fequency spectrum,amplitude spectrum of wavelet packet time-frequency.
建立了相应的小波包时频分量谱、小波包时频分量幅度谱、小波包时频谱、小波包时频幅度谱等概念。
6) Wavelet Package Analysis
小波包分析
1.
An algorithm of interferometry phase filter of In SAR based on wavelet package analysis algorithm;
基于小波包分析的InSAR干涉图滤波算法研究
2.
Based on the wavelet, wavelet package analysis (WPA) technologies and the power-inspecting of wavelet package, the fault monitoring method is presented using the power-inspecting of wavelet package to pick-up the characteristics of signals.
分析了刀具的切削状态,介绍了刀具的声发射信号检测系统和小波、小波包分析技术,以及小波包频带能量分解方法,提出了小波包分解功率监测特征量提取技术。
3.
A new signal de-noising method based on virtual response information is proposed,which considers fully the response property of linear dynamic system in time domain and the property of frequency space partitioned by wavelet package analysis.
在充分考虑线性动力系统的时域响应特性以及小波包分析的频率空间剖分特性的基础上,提出了一种基于虚拟响应信息提取的信号去噪新方法。
补充资料：哭李频员外时在建川
【诗文】：
出麾临建水，下世在公堂。
苦集休开箧，清资罢转郎。
瘴中无子奠，岭外一妻孀。
定是浮香骨，东归就故乡。
【注释】：
【出处】：
全唐诗：卷716-35
出麾临建水，下世在公堂。
苦集休开箧，清资罢转郎。
瘴中无子奠，岭外一妻孀。
定是浮香骨，东归就故乡。
【注释】：
【出处】：
全唐诗：卷716-35
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条