linear time-frequency distribution 线性时频分布
cohen time-frequency distribution Cohen类时频分布
Wigner time-frequency distribution Wigner时频分布
cohen bilinear time-frequency distribution cohen类双线性时频分布
Time Frequency Distribution 时频分布
joint time-frequency distribution 时频联合分布
time-frequency distribution image 时频分布图像
To compute time-frequency distribution is not the aim but just a preparation for further estimation.
2．计算信号的时频分布并不是最终的目的，而只是为信号的进一步分析进行准备。
参考来源 - 时频分析在雷达信号多参数估计中的应用研究The theory of time-frequency distribution entropy is put into practice. The fault of packing leakage of C-1150 is predicted successfully.
把时频谱熵等理论的研究成果运用于实践,成功的预知诊断了C-1150往复式压缩机填料泄漏故障,用实践验证了局域波时频谱熵理论的准确性和可行性,同时给工厂带来了较大的经济效益。
参考来源 - 基于时频谱熵的往复式压缩机故障诊断及应用·2,447,543篇论文数据，部分数据来源于NoteExpress
Time-frequency distribution(TFD) of multi-component signal can produce cross-components, TFD with fixed kernels perform well only for limited signals.
多分量信号的时频分布会产生交叉项，采用固定核函数的时频分布，其适用的信号形式有很大的局限性。
The authors propose a new method with combination of time domain and frequency domain by using the time-frequency distribution image of the radar signal.
借助于雷达信号的时频分布图像，提出了一种在时频联合域上进行信号识别的新算法。
We illustrate the wavelet package analysis that can obtain the time-frequency distribution figure of noise signal, which can be used to define gray-image.
首先对噪声信号进行小波包分解，得到含有待诊断柴油机主轴承间隙故障信息的噪声信号时频分布图，并由此定义图像。
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