spectrum density

常见例句

Meaning: The self-correlation function and power spectrum density Function of a power-typed signal compose a FT pair.
上式表明：功率型信号的自相关函数与其功率谱密度函数构成傅立叶变换对。
We can get frequency response, power spectrum density(PSD), modal coordinates, etc. by modal analysis module of ADAMS.
利用ADAMS做模态分析，可以求得频率响应、功率谱密度（PSD）、模态坐标等信息。
And as a result of statistics and FFT, the PSD (power spectrum density) of the samples is obtained. Compared to the original PSD, it proves that the method is sample, reliable and effective.
并对结果进行了统计检验，得到的样本统计谱密度与理论谱密度进行对比分析，结果说明这是一种简单、可靠、行之有效的方法。