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1·The power spectrum density (PSD) function is important in gust load flight experiment data analysis.

功率谱密度（PSD）函数在阵风载荷飞行试验数据分析中占有重要的地位。

2·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。

3·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。

4·With its attacking traffic pattern, obvious difference was found between the power spectrum density (PSD) of legitimate and attack traffic samples.

分析发现，合法流量和包含攻击包流量采样在功率谱密度上存在显著差异。

5·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。

6·Giving concrete digital-modulated form, the mean power spectrum density of the signals discussed can be obtained in this way. The calculation can be done on computers.

给定具体的数字调角形式，用这种方法可在计算机上计算所给信号的平均功率谱密度。

7·As a result, some parameters of the key points have been got including the power spectrum density (PSD), the response variance, the gust response factor for load and displacement.

生成了若干关键点的功率谱密度(PSD)和响应的均方值，以及荷载风振系数、位移风振系数。

8·An analysis of a type of angular contact ball bearing under given input power spectrum density is performed. The result demonstrate that the bearing is safe in any load direction.

以某种角接触球轴承为例，验证了其在给定输入功率谱密度下任意方向加载都安全。

9·Wind field parameters involved in wind field simulation include mainly turbulent wind power spectrum density and spatial-correlation function, which is measured and applied to wind simulation.

风场模拟涉及的风参数主要包括脉动风谱和空间相关函数，对风洞中的风场参数进行了实测拟合并应用于风场模拟当中。

10·In the end the proposed method is used to detect early bearing faults in one helicopter gearbox and the results demonstrate that it is superior to power spectrum density (PSD) and demodulation an.

最后在某型直升机齿轮箱轴承故障的早期检测中进行了实验验证。