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1)  Signal power density spectrum
信号功率密度谱
2)  signal power spectrum
信号功率谱
1.
The mathematical expression of the signal power spectrum for 40 Gb/s Gauss pulse signal with the effect of first-order PMD is given,and the effects of pulse waveform,splitting ratio,monitor frequency,and differential group delay (DGD) on the receiver signal power spectrum are analyzed.
首先给出了受一阶偏振模色散(PMD)影响的40 Gbit/s高斯脉冲信号功率谱的数学表达式,并分析了脉冲波形、分光比、监测频率以及差分群延时(DGD)对接收信号功率谱的影响。
3)  power spectrum density
功率谱密度
1.
TAM method of analyzing power spectrum density of heavy-tailed ON/OFF Source;
分析重尾ON/OFF源功率谱密度的TAM近似法
2.
In this system,the characteristics of monitoring signals are extracted by the method of power spectrum density maximum(PSM),and least square support vector machine(LS-SVM) is proposed to detect damages.
基于被动监测技术的局限性,搭建了损伤主动监测系统,对监测信号进行了功率谱密度最大值(PSM)特征提取,并提出了一种基于最小二乘支持向量机(LS-SVM)的损伤检测方法。
3.
The online measuring of the ground surface roughness was estimated by taking into account the power spectrum density of the frictioninduced acoustic emission.
利用摩擦产生的声发射(AE)信号的功率谱密度对磨削表面粗糙度进行在线评价。
4)  power spectral density
功率谱密度
1.
Study and validation of the relationship between international roughness index and power spectral density;
国际平整度指数与路面功率谱密度相关关系研究及验证
2.
Specifying surface roughness of optical film substrate using the power spectral density;
利用功率谱密度函数表征光学薄膜基底表面粗糙度
3.
Power spectral density measurement for large aspheric surfaces;
用于大口径非球面的波前功率谱密度检测
5)  PSD
功率谱密度
1.
MATLAB numerical simulation of stationary stochastic porcess based on ISTA PSD;
基于ISTA功率谱密度的MATLAB随机过程时域样本再现
2.
Pulse Shape of UWB Signals and PSD Analysis;
UWB信号波形及功率谱密度的分析
3.
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。
6)  power spectrum density(PSD)
功率谱密度
1.
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。
2.
Directed against the situation of difficult to estimate the vibration fatigue life-span under complex random loading in engineering practice,the estimation of fatigue life-span on the viabrational component parts under random loading has been carried out based on Power Spectrum Density(PSD) function.
针对工程实践中复杂随机载荷下振动疲劳寿命难估算的情况,基于功率谱密度函数(PSD)对随机载荷下的振动构件进行疲劳寿命估算,分别讨论了窄带随机载荷和宽带随机载荷两种情况,方法简单,具有很强的工程实用性。
补充资料:信号


信号
signal

  信息的传递需要有适当的物质载体,并需要变换成某种表现形式,信息的物质载体和表现形式称为信号。系统的输入和输出即是信号,故应称输入信号和输出信号。输入信号通过系统被变换成相应的输出信号。
  
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