amplitude density spectrum的意思|示意

Based on radar clutter distribution, the radar clutter model is analysed for amplitude probability density distribution and power spectrum density distribution.

从雷达杂波的分布特性出发，分析了杂波的解析模型，阐述了雷达杂波幅度的概率密度分布及其功率谱密度分布。

The track spectra of Qinhuandao-Shenyang(QS) passenger railway line and German railways were compared in terms of power spectrum density(PSD), amplitude of time domain samples and dynamic performance.

从轨道谱的功率谱密度、时间样本幅值及对动力学性能影响的角度，对比了秦沈线轨道谱和德国轨道谱。