1)power spectral density function功率谱密度函数
1.Analysis about evaluating method of power spectral density function;功率谱密度函数评价方法探讨
2.In practical application,one of the difficulties is the adjustment of the power spectral density function to various soil conditions.在实际应用中 ,调整功率谱密度函数以适应各类场地土仍是一项困难的工作。
3.Using random process analysis method the characteristic parameters, amplitude density function autocorrelation function and power spectral density function of the surface topogtaphy of each component can be obtained separately.在对电加工零件表面粗糙度进行测量,得到大量的实测数据(即测量算术平均偏差Ra在表面径向等角距的八个方向的数据)的基础上,运用随机分析方法,分别求出每个零件表面形貌的特征参数、幅度密度函数、自相关函数和功率谱密度函数,通过对这些特征参数及函数图形进行分析,评估电加工零件表面形貌,为制订合理的表面粗糙度评定参数作准备。
英文短句/例句
1.Floor response spectra analysis of base-isolated structure based on PSDF隔震结构基于功率谱密度函数法的楼层反应谱分析
2.Road irregularity, as a stationary stochastic process, is generally illustrated by power spectral density (PSD) in frequency domain.道路随机过程通用的描述方法为频域的功率谱密度函数方法。
3.Floor Response Spectra Analysis of Nuclear Reactor Buildings with Additional Base-Isolation Measures Based on PSDF基于功率谱密度函数法的核电厂房增加隔震措施后的楼层反应谱分析
4.double frequency spectral density functio双重频率谱密度函数
5.Influence of Window Function on The Estimation Precision of Traditional Power Spectrum窗函数对传统功率谱估计精度的影响
6.-squared probability density functionχ方概率密度函数 χ
7.bivariate normal probability density function二元正态概率密度函数
8.multi-variate probability density functio多变量概率密度函数
9.a joint proBaBility density function一个连合概率密度函数
10.a posteriori conditional probability density后验条件概率密度函数
11.The Research of Welch Method in Estimate of Power Spectram;功率谱估计的Welch方法中的窗函数研究
12.A kind of method of Multi-dimensional probability density function structured by one-dimensional probability density function;一类由一维概率密度函数构造多维概率密度函数的方法
13.To token both curve of uncertainty is recommend which Probability Density Function and Cumulative Density Function.介绍了表征不确定性的概率密度函数和累计密度函数曲线。
14.The estimated esseen bound of the density function of the first probability;一类概率密度函数估计的Esseen界
15.Unifom Strong Consistency of Kernel Estimator for the Probability Density Funtion;概率密度函数核估计的一致强相合性
16.Novel BSS algorithm for estimating PDF based on SVM盲源分离的SVM概率密度函数估计算法
17.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。
18.Analysis and Selection of Several Power Spectrum Estimation Functions in MATLABMATLAB中几种功率谱估计函数的比较分析与选择
相关短句/例句
power spectrum density function功率谱密度函数
1.Comparison studies have been performed concerning of dynamic amplification factor β and power spectrum density function (approximately estimated from design spectra) between Eurocode 8 and primary seismic design codes of China.用动力放大系数β对欧洲规范 (Eurocode 8)和我国主要抗震设计规范的设计谱进行比较 ;并对由欧洲规范和我国主要抗震设计规范设计谱估计出的功率谱密度函数作了比较。
3)spectral density function功率谱密度函数
1.Based on the power spectral density function of impulse wind load,the time history of impulse wind load varying along with the space positions has been concisely simulated.依据脉动风荷载的功率谱密度函数,探讨了AR模型方法实现考虑空间相关性影响的水平脉动风荷载的模拟方法。
2.In the method, the probability density function of a stochastic process is described from the spectral density function of the stochastic process.通过研究随机过程峰值分布的规律,提出了由随机过程的功率谱密度函数来分析随机过程峰值概率密度函数的新方法。
4)auto-power spectral density function自功率谱密度函数
5)single power table density function单边功率谱密度函数
6)normalized power spectrum density function标准化功率谱密度函数
延伸阅读
谱密度谱密度spectral density 谱密度[吸碑ctrai de函ty;ene,Tpa二‘H明n加TooeT‘],n维空间中平稳随机过程或齐次随机场的 宽平稳随机过程或宽齐次随机场的协方差函数的E阅der变换(Fouriert侧Lnsform)(见平稳随机过程(stationa巧stochast沁process);齐次随机场(random反ld,h0Inogmeous)).协方差函数的Fourier变换存在的平稳随机过程和齐次随机场称为有谱密度的过程. 设 x(t)二王X*(t)}又一,为一n维平稳随机过程,且设 X(。)一丁。“孟。(d、),,一{,*}:一为其谱表示(中*是对应于多维随机过程X(t)的第k个分量X*(t)的谱测度(speetral心asure)).积分的范围在离散时间t情形为一兀蕊又簇兀,而在连续时间t情形为一co<义<+的.过程x(t)有谱密度 f(又)={fk,‘(又)}戈,,一,,如果其谱测度F二{F*.,}二.‘一:的所有元 F*,,(△)二E。*(△)币又丽,人,z=1,…,。都是绝对连续的,且 F,,(d又) f一以)-一. d又特别地,如果对于过程X(t)(t二O,土1,…),关系式 ,工。!”*,,(‘)l<①,“,‘一’,’一n成立,其中 B(t)二{B*,,(:)}义,,-一{EX*(:+s)I不万}又,,一,是X(t)的协方差函数(eovariancefo刀etion),那么X(t)有谱密度,且 j、*.,(“)一(““)一’,刃二”*,,(r)exP{一‘“‘}, 一兀簇又簇兀,此,l=1,…,”. 对于过程X(t)为连续时间t的情形,情况是类似的.谱密度f(几)有时称为二阶谱密度(seeond一or-der spectral density),以区别于高阶谱密度(见谱半不变量(s pectral~一invariant)). 一齐次n维随机场X(t,,…,t,)有谱密度f(又,,…,之。),如果它的谱分解(spect成res01ution)F(又:,…,又。)具有以下性质:混合导数a”F/刁几:二似。几乎处处存在,记 刁”F f(几:,…,又。)=了了一奋=一, 日又、.‘刁又。且 F(几、,…,又。)= 又1几。 一丁…丁f(。1,一。。,d;1…‘“·+常数· 连口五。.成立.