spectrum density

常見例句

Meaning: The self-correlation function and power spectrum density Function of a power-typed signal compose a FT pair.
上式表明：功率型信號的自相關(guān)函數(shù)與其功率譜密度函數(shù)構(gòu)成傅立葉變換對。
We can get frequency response, power spectrum density(PSD), modal coordinates, etc. by modal analysis module of ADAMS.
利用ADAMS做模態(tài)分析，可以求得頻率響應(yīng)、功率譜密度（PSD）、模態(tài)坐標(biāo)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.
并對結(jié)果進(jìn)行了統(tǒng)計檢驗，得到的樣本統(tǒng)計譜密度與理論譜密度進(jìn)行對比分析，結(jié)果說明這是一種簡單、可靠、行之有效的方法。