1) Wigner-ville distribution(WVD)time-frequency analysis method

Wigner-ville时频分析法
2) WVD

Wigner-Ville分布
1.
Time-frequency distribution characteristics of Wigner-Ville distribution(WVD) and Choi-Williams distribution(CWD) are discussed,both of which are members of the Cohen s class.
分析了2种Cohen类时频分布Wigner-Ville分布(WVD)及Choi-Williams分布(CWD)的时频特性。
2.
Some typical methods of extracting the in-pulse features of radar signal such as wavelet transformation and WVD were compared.
通过对小波变换法、Wigner-Ville分布等典型雷达信号脉内特征提取方法优缺点的分析,提出了一种将小波变换法和Wigner-Ville分布提取的结果进行截断综合的综合提取算法,实现了雷达信号的脉内特征准确提取。
3.
The instantaneous frequency spectrum of the impulse radio signal is represented by HHT,and which is calibrate its fidelity compared with the best existing methods,the wavelet analysis and Wigner-Ville distribution(WVD).
通过HHT可以得到冲击无线电信号的时频谱,并与传统的小波时频谱和Wigner-Ville分布进行了比较。
3) Wigner-Ville distribution

Wigner-Ville分布
1.
Time frequency-based independent component analysis for elimination of cross-terms in Wigner-Ville distribution;
基于时频独立分量分析的Wigner-Ville分布交叉项消除法
2.
Research on identifying method of the Wigner-Ville distribution to crossing item;

Wigner-Ville分布交叉项识别方法研究
3.
Suppressing crossterms of Wigner-Ville distribution based on empirical mode decomposition;
基于经验模式分解的Wigner-Ville分布交叉项抑制方法
4) Wigner-Ville Distribution(WVD)

Wigner-Ville分布(WVD)
5) pseudo-Wigner-ville distribution

伪Wigner-ville分布
1.
In the light of pseudo-Wigner-ville distribution and bispectrum estimation analysis, the feature chart of fault signals is established.
利用伪Wigner-ville分布和双谱估计可绘出滚动轴承故障信号的特征图谱。
6) cross wigner-ville distribution

互Wigner-Ville分布
1.
This paper presents an instantaneous frequency iterative estimation based on the cross Wigner-Ville distribution(XWVD).
提出一种基于互Wigner-Ville分布(XWVD)的瞬时频率迭代估计方法。
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CAS号:
性质:又称人造假发。以化学纤维为原料制成类似人的头发丝。经编网、植入等工艺编织成发套。假发的性能接近人的头发。如光泽柔和、蓬松、可洗易干等特征。如纺制成异形截面如六角形更佳。一般原料用腈纶、锦纶、氯纶或腈氯纶。假发用于装饰、戏剧化妆和美容等。
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