首先建立了脉动风荷载的功率谱密度函数矩阵。
The matrix of power spectral density function of fluctuating wind load is established first.
对于连续突风，由频响函数求得响应的功率谱密度。
The approach of continuous gust response was based on the calculation of the power spectral density.
得到的风速时程样本的功率谱密度与目标曲线吻合很好。
The power spectrum of wind speed time series sample is coincident with the aim power spectrum curve.
压力信号的功率谱密度具有频率波动范围窄、幅值大的特点；
They obey normal distributions. Distributions of power spectral density (PSD) for pressure signal display narrower frequency range and higher amplitude.
7级大地震数据进行处理，获得地球自由振荡的功率谱密度。
7 are processed, the PSD of Earth free oscillation is obtained.
用平均平滑周期图法分别估算出信号与噪声的功率谱密度函数。
The power spectrum of the noise and signal are estimated by the average smooth periodogram method.
本文推导了采用不同孔径参数的实验结果，以及波前斜率的功率谱密度。
The experimental results of the different aperture parameters and the power spectral density of wavefront slope are derived in the paper.
工程结构的随机地震反应分析，常在频域中用到地震动的功率谱密度函数。
The power spectral density function of earthquake motion is usually used for the random response analysis of engineering structures in the frequency domain.
根据海浪波能谱，计算了舰船摇荡运动的功率谱密度和舰船的随机摇荡运动。
The power spectral density of ship's motion is calculated based on ocean wave energy spectrum and the movement spectrums of the ship's random motion are calculated and created.
根据海浪波能谱，计算了舰船摇荡运动的功率谱密度和舰船的随机摇荡运动。
The power spectral density of ship's motion is calculated based on ocean wave energy spectrum, and the movement spectrums of the ship's random motion are calculated and created.
直接序列扩频信号具有较低的功率谱密度，信号淹没在背景噪声中，侦查难度较大。
Due to its low power spectral density, the direct sequence spread spectrum signal is always submerged with the back-ground noise, so that it is difficult to reconnoiter the signal.
直接序列扩频信号具有较低的功率谱密度，信号淹没在背景噪声中，侦查难度较大。
Due to its low power spectral density, the Direct Sequence Spread Spectrum signal (DSSS) is always submerged with the back-ground noise, so that it is difficult to reconnoiter the signal.
本文应用自适应最小二乘格型（LSL）算法估计非恒定流压力脉动的功率谱密度。
This paper uses the adaptive least squares lattice algorithm (LSL) to calculate the spectral estimation of pressure fluctuations in unsteady flow, and describes the principle of the LSL algorithm.
一些不同的数字调制信号有着相同或相近的功率谱密度，但它们的谱相关函数却有明显区别。
Different types of digitally modulated signals that have similar, if not identical, power spectral density functions can have highly distinct spectral correlation functions.
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。
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.
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。
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.
在对数据进行清理的基础上，分析了各站坐标分量噪声的功率谱密度，计算了表征各分量的噪声特性的谱指数。
On the basis of data processing, we analyze the power spectrum density of coordinate component noise at each site and calculate the spectral indexes manifesting the noise property of each component.
就特定海域分析和计算了大气噪声的功率谱密度，同时计算了在保证较高测量精度条件下所需要的最低场强，继而给出了无线电导航系统所需辐射功率的计算方法。
Radiant power of atmospheric radio noise and electric field intensity is computed precisely for given maritime space, and then the computational way of radiant power is given.
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。
Meaning: The self-correlation function and power spectrum density Function of a power-typed signal compose a FT pair.
文中提出等效噪声功率谱密度的概念。
The concept of "equivalent noisy power spectral density" is introduced in this paper.
功率谱密度是评价流通环境过程中随机振动的有效工具。
Power spectral density is an effective tool to evaluate random vibration in circulation environment.
若上述正实条件仅在某些频带上满足，则FXLMS算法的收敛将依赖于参考信号功率谱密度的分布。
But if above positive real condition is satisfied only within some frequency range, the convergence of FXLMS algorithm is dependent on the spreading of power spectral density of the reference signal.
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。
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.
通过回归分析的方法对标准分级道路功率谱密度与相应国际平整度指数之间的关系进行了研究。
The correlation between the standard classified road power spectral density (PSD) and international roughness index (IRI) was discussed by using regressive analysis.
算法利用了信号进行傅里叶变换后功率谱密度中所包含的信号特征在基带完成，并用软件实现。
This algorithm has utilized the signal to carry on the signal characteristic that Fourier includes in the density of the power spectrum after Fourier transform.
用相同的激励信号作用，结果显示，功率谱密度无法分辨非最小相位信号。
With same input signal to excite two systems, the results show that the power spectral density of the output can't identify non-minimum phase signal.
运用分形和分维理论，用半方差法和功率谱密度法分别计算土壤强度的分维，其值接近2。
The fractal dimensions of soil cone indices were estimated in semi-variograms and power, spectral densities, which were all very close to 2.
从理论上详细分析了光纤环形腔有内相位调制时的输出光电流功率谱密度函数，该理论对任意相干长度的输入激光光源都是有效的。
The power density spectrum of an inner-phase-modulated optical fiber resonator is analyzed theoretically and experimentally, which is valid for any source coherence time.
提出了依据宽带随机谱功率密度函数求解等效应力幅的半解析公式。
The semi-analytical solution for evaluating ESR from spectral density function of wide-band random loading is presented.
提出了依据宽带随机谱功率密度函数求解等效应力幅的半解析公式。
The semi-analytical solution for evaluating ESR from spectral density function of wide-band random loading is presented.
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