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cross spectrum density 互谱密度
The power density spectra and cross spectra of PCA/RXTE data of Cir X-1 in different observational periods are studied. 利用 RXTE在不同时期的观测数据 ;分析了 Cir X-1功率密度谱和交叉谱 .
The amplitude frequencies and distribution interval of power spectrum density of road surface depend on the roughness coefficient. 路面不平度系数的大小决定了幅值频次和路面功率谱密度的分布区间。
This method resolves the problem of signal detection with high side lobe levels, but loses information of the power spectrum density. 这样解决了高旁瓣下信号检测的问题，但却丢失了功率谱密度信息。
A measurement is made for the structure-borne power flow of a ventilation fan mounted on a concrete floor by using the cross spectrum method. 本文利用互功率谱的方法对安装在混凝土地板上的小型排气扇工作时产生的结构声功率流进行了现场测量。
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。
Methods of PSD(power spectrum density),ARMA,and Allan variance were federally used to study of the error speciality and modeling technology of the FOG(fiber optic gyroscope). 提出应用ARMA;A llan方差分析法及功率谱密度PSD(Power Spectrum Density)分析法联合对光纤陀螺FOG(Fiber Optic Gyroscope)的误差特性及建模技术进行了研究.
On the basis of the principle of the linear predictive coding(LPC), an weighting overlaps average LPC power spectrum density estimation algorithm is proposed. 基于线性预测编码(LPC)原理提出了一种加权交叠平均的LPC谱估计算法，同时给出了支持向量机解决多类分类问题的一对多方法。
Then,the classical spectral representation method based on power spectrum density functions is applied,and Davenport spectrum is used to generate wind speed histories of a given field. 然后,应用经典的基于功率谱密度函数的谱表现方法,结合D avenport谱生成了目标场地的风场;
It is necessary to build the random error model of gyros. Several methods can be used to analyse random error model of ring laser gyro (RLG), such as power spectrum density (PSD), ARMA, and Allan variance. 在环形激光陀螺仪（RLG）随机误差模型分析方法中，有功率谱密度（PSD）分析，时序ARMA模型，及Alan方差分析。
By the relation between the Allan variance of signal noise and power spectrum density (PSD), the sources of some kinds of noise and its properties are analyzed and calculated using fitting algorithm in the least square method(LSM). 根据光纤陀螺信号漂移和噪声的Allan方差与功率谱密度(PSD)关系,在Allan标准差模型的基础上采用最小二乘法(LSM)进行样本数据拟和,有效地分离和辨识出了光纤陀螺零漂信号中的各项误差源随机误差系数和误差贡献大小。
The flow field of the precessing jet is obtained by a hot wire anemometer at the nozzle exit and the precession frequency is identified from a power spectrum density analysis to the velocity signal. 用热线风速仪测量出口射流的速度并进行功率谱分析,得到旋进射流的频率及流场特性。
The MTI performance in non-Gaussian type clutter such as cubic and square clutter PSD (Power Spectrum Density) environments is analyzed.The up limit curves of the average improvement factor are given. 该文主要讨论了在非高斯型的立方及平方型杂波功率谱环境下雷达系统的MTI性能,给出了MTI滤波器平均改善因子的上限。
Based on power spectrum density (PSD) estimation, a novel method for multipath channel estimation is presented.Channel equalization can be applied in the system using the channel estimation result. 本文通过功率谱估计(PSD)估计来估计无线多径信道,然后在系统中进行信道均衡。
Factor Selection Based on Cross Spectrum Analysis 基于交叉谱分析法的因子筛选
Use LP Method with cross spectrum matrix to DOAs 基于线性预测的互谱域角度谱估计方法
It is rash to cross the street without looking both ways. 不朝两边看看就穿马路是莽撞的。
power spectrum density estimation 功率谱密度估计
Cross and angry words in family grate upon the ear. 不高兴与生气的话在一个家庭里令人不愉快。
A mule is a cross between a horse and an ass. 骡是马和驴交配而生的杂种。