Different types of digitally modulated signals that have similar, if not identical, power spectral density functions can have highly distinct spectral correlation functions.
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。
The experimental results of the different aperture parameters and the power spectral density of wavefront slope are derived in the paper.
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。
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.
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。
The concept of "equivalent noisy power spectral density" is introduced in this paper.
文中提出等效噪声功率谱密度的概念。
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。
Power spectral density is an effective tool to evaluate random vibration in circulation environment.
功率谱密度是评价流通环境过程中随机振动的有效工具。
The methods of computation and realization of signal power spectral density are mainly discussed.
文中主要描述了信号功率谱的计算和实现方法。
Fixing the acceleration sensor in the axis of the wheel, by measuring the acceleration of the axe to calculate road power spectral indirectly, this greatly simplifies the operation process.
在负重轮轮轴处安装加速度传感器，通过测量该处的时域加速度来间接计算路面功率谱，大大简化了操作过程。
The random rail roughness samples are yielded using random numerical method and power spectral density function.
采用随机数值模拟方法和功率谱密度函数生成随机轨道粗糙度。
Three methods for analyzing and processing the laser scattering signal of bubbles in water, the threshold detection, noise elimination processing and power spectral estimation, are put forward.
提出了阈值检测、降噪处理和功率谱估计三种分析和处理水中气泡激光散射信号的方法。
The matrix of power spectral density function of fluctuating wind load is established first.
首先建立了脉动风荷载的功率谱密度函数矩阵。
The calculation results using simulated and measured irregularity indicate that the power spectral density function and the simulated method used here can reflect true condition of rail.
同时，采用模拟与实测两种不平顺样本的计算结果表明，本文采用功率谱密度函数的模拟方法可以基本反映轨道的实际不平顺情况。
Land clutter's power spectral model is presented, and the characters of the probability distribution of land clutter's amplitude are also analyzed.
对地面雷达地杂波建模方法进行了深入研究，给出了地杂波功率谱模型，分析了地杂波幅度概念分布特性。
The results indicate that the LPWA has much better reproducibility and accuracy than the major frequency of power spectral density in reflecting the properties of bubble phase.
结果表明，它具有比传统的功率谱主频好得多的统计重复性，能更准确地反映气泡相的特性。
The power spectral density function of earthquake motion is usually used for the random response analysis of engineering structures in the frequency domain.
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。
A high degree of relationship was found between the power spectral density and thermal response index (TRI).
功率谱密度值与时域指标体温反应指数(TRI)有极好的相关性。
The correlation between the standard classified road power spectral density (PSD) and international roughness index (IRI) was discussed by using regressive analysis.
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。
They obey normal distributions. Distributions of power spectral density (PSD) for pressure signal display narrower frequency range and higher amplitude.
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；
Compared with the traditional method, it does not need disassembling the power spectral densities of stochastic signal covariance and is not bound to if the power spectral densities are rational.
与传统的方法相比，无需对随机信号的协方差函数的功率谱进行分解，不受限于协方差函数的功率谱是否为有理式。
Firstly, the power spectral density function of refractive index is given including the effects of inner and outer scale of the turbulence.
首先，给出了包含大气湍流内，外尺度效应的折射率功率谱密度函数。
The results indicate that the power spectral entropy of blood pressure waveform in this study can be a new measurement of heart rate fluctuations.
这一结果预示着血压波功率谱熵可作为心率波动的一种新的度量。
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。
Aiming at this problem, an effective method based on FFT and power spectral density computing has been put forward.
针对此问题，笔者提出了一种基于快速傅立叶变换和功率谱密度计算的解决方法。
Objective The power spectral density functions of outpatient flow are calculated in order to study the spectral characteristics of the given time series.
目的以门诊量资料为例，计算功率谱密度函数，研究时间序列信号的频率域特征。
Then the power spectral densities of UWB signals with difference parameters are simulated by the simulation model, and the feasibility of the model is validated.
文中还应用该仿真模型对具有不同参数的UWB信号功率谱进行了仿真，验证仿真模型的可行性。
The wavefront power spectral density(PSD) is being adopted for specifying the large optical component employed in high power density solid-state laser for inertial confinement fusion(ICF).
波前功率谱密度（PSD）被用于评价惯性约束聚变（ICF）激光驱动器光学元件中频段的波前误差。
The power spectral density function of ground acceleration can be described as filtered white noise applied on each support point.
地面运动加速度功率谱模型为零均值的平稳高斯过程，描述为过滤白噪声施加于支撑各点。
The wavefront power spectral density (PSD) is being adopted for specifying the large optical components employed in high power density solid state laser for inertial confinement fusion (ICF).
波前功率谱密度（PSD）被用于评价ICF激光驱动器光学元件在中频区域的波前误差。
The density of power spectral entropy, on the whole, is an exponential decline curve with frequency augmentation without reference to water flooded extent.
功率谱密度不论水淹程度如何，整体为一随频率增大其能量按指数递减连续频谱；
The density of power spectral entropy, on the whole, is an exponential decline curve with frequency augmentation without reference to water flooded extent.
功率谱密度不论水淹程度如何，整体为一随频率增大其能量按指数递减连续频谱；
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