功率谱密度

通过理论推导，分析并得到了一种新的基于IFFT和时域随机化的非高斯随机过程模拟算法，能够方便快捷地模拟具有指定功率谱密度、偏斜度和峭度值的平稳非高斯信号。

Through theoretical derivation , a new algorithm based on IFFT and time domain randomization for the simulation of non-gaussian random processes with specified PSD , skewness and kurtosis was proposed .

功率谱密度是通信信号非常重要的参数，所以在通信的各个阶段都需要对功率谱密度进行测量。

PSD is a very important parameter in communication .

这些结果与Fourier意义下的功率谱密度估计有很大的不同。

These results are much different from that of Fourier 's.

基于功率谱密度分析的ATM连接允许控制研究

Research on ATM Connection Admission Control Based on Power spectrum Analyses

混沌PWM逆变器输出电压功率谱密度分析

Analysis of Power Spectral Density of the Output Voltage in Chaotic PWM Inverter

将数字声波信号导入MATLAB软件进行处理，得到其功率谱密度图。

Then they were imported to MATLAB and calculated to obtain the power spectral density ( PSD ) .

根据AR模型系数计算功率谱密度（PSD）。

AR model coefficients calculated according to the power spectral density ( PSD ) .

功率谱密度（PSD）在评价超精密光学表面中的应用研究

Application of Power Spectral Density to Specify Optical Super-precision Surface

UWB信号波形及功率谱密度的分析

Pulse Shape of UWB Signals and PSD Analysis

PAL电视信号的2&D相关系数和功率谱密度

The 2-D Correlation Coefficients and Power Spectrum Density ot fhe PAL TV Signals

利用FFT法分析打击音波的功率谱密度；

The FFT method was used to analyse the power spectral density of sound wave forms of watermelons .

对C级公路路面进行数值模拟，模拟结果表明：利用该方法所得路面不平度的功率谱密度与给定的功率谱密度是准确一致的。

The simulation and analysis were done on the C grade road . The results indicate that the power spectrum density of road roughness obtained is the same as given .

对一些重要的包络函数g（t），本文通过简单的频域分析求出了精确的时变功率谱密度。

For some important modulating functions , accurate and analytic time-dependent power spectral densities of responses are worked out by means of simple frequency domain analyses .

由此降低了功率谱密度，提高了频带使用效率和便于多址应用。通过对每个相干载波信号CI扩频且合成，其效果很好。

The power spectrum density is decreased , the frequency usage efficiency is improved and the multi-access application is allowed .

这种方法以接收信号的功率谱密度函数为时间序列，利用最小二乘格型自适应滤波器经由AR建模而得到高分辨率的时间延迟估计。

This method uses the eross power spectral density ( PSD ) function of two received signals as a time sequence .

分析重尾ON/OFF源功率谱密度的TAM近似法

TAM method of analyzing power spectrum density of heavy-tailed ON / OFF Source

在频域分别对比使用周期图法和AR模型法分析心率变异信号96功率谱密度。给出了分析实例，并说明了AR模型的优点及实用性。

Then the PSD ( Power Spectrum Density ) of HRV is analyzed in frequency-domain using Periodograms and AR ( Autoregressive ) Models .

建立了4自由度汽车振动模型，利用Matlab软件仿真得到汽车车身质心垂直加速度功率谱密度和俯仰角加速度功率谱密度。

A four-degree-of-freedom vehicle vibration model was set up and the PSDs for vertical acceleration and pitching angular acceleration of vehicle body centroid were got through Matlab simulation .

比较了纯PN结雪崩二极管和带有隧道穿透的PN结雪崩二极管的噪声功率谱密度。

The spectral noise power density of pure avalanche diodes is compared with that of avalanche the diodes with tunneling penetration .

提出了基于小波函数的两个正交脉冲，其功率谱密度满足美国通信委员会（FCC）对UWB系统的频谱限制。

Two orthogonal pulses based on wavelet were presented , their spectrum meet FCC spectral mask for ultra wideband ( UWB ) system .

通过仿真观察到调制与解调信号的波形，星座图以及QAM信号功率谱密度曲线，并对仿真结果进行了分析。

The modulating wave . Constellation Diagram and power spectrum density curve is observed by simulation .

功率谱密度函数是两个Voigt函数之和。

The power spectral density is composed of two Voigt function .

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。

We can get frequency response , power spectrum density ( PSD ), modal coordinates , etc. by modal analysis module of ADAMS .

作为随机过程的车辆道路不平度高程，通用的模拟方法是频域模型&道路不平度功率谱密度（PSD）。

Road irregularity , as a stationary stochastic process , is generally illustrated by the power spectral density ( PSD ) in frequency domain .

但是，较低的发射功率谱密度导致UWB信号的传输距离只有几米到十几米。

However , the transmission distance of UWB is only from meters to more than ten meters according to the quite low transmission power spectrum density .

本文在已知VonKarman功率谱密度函数的情况下，选择利用自回归滑动平均（ARMA）模型来仿真风速。

This paper uses Auto-regressive moving-average ( ARMA ) model to simulate the wind records based on Von Karman spectral .

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。

A high degree of relationship was found between the power spectral density and thermal response index ( TRI ) .

对实测高精度火箭橇试验轨道随机不平顺功率谱密度（PSD）进行B样条插值，得到拟合用PSD平均曲线。

Stochastic irregularity power spectrum density ( PSD ) data surveyed from high accuracy rocket sled test track is interpolated with B-spline to gain PSD average curves for curve fitting .

在频域上，使用Burg算法得到的最大熵功率谱密度估计，可以得到心肌速度的频域特征。

In frequency domain , we obtained myocardial frequency characteristics by calculating its power spectrum density .

通过MATLAB仿真编程软件实现了盲源分离过程，利用相似系数和分离前、后功率谱密度之间的对比验证了算法的可行性。

Through MATLAB simulation program software to achieve the blind source separation process , use the similarity coefficients and power spectral density separation before and after the comparison , that proved the feasibility of the algorithm .