查询词典 covariance

By restricting the covariance structure, some theorems of the complete convergence and strong law of large numbers for PA random variables sequences are obtained by applying the properties and inequalities of PA random variables.

在这里通过对协方差结构的限制，应用关于PA随机变量序列的性质、不等式，建立了PA随机变量序列的完全收敛定理和强大数定律。

Covariance structure model ; equivalent model ; substitution rule

协方差结构模型；模型等同；替代法则

Then, in support of his covariance principle, Einstein [2] remarked, It should be noted that this result, also, of the theory is not influenced by our arbitrary choice of a system of coordinates.

于是作为支持他的协度变原理，爱氏评论道：请注意这结果，而且这理论是不受任意选择坐标系统所影响的。

It discusses theory of relativity featuring the characteristics of time and space, the principles of equivalence and general covariance in general relativity, gravitational field equations, the principle of relativity, time dilation, contraction of length, and gravitational waves in gravitational field.

对相对论中的时间和空间特性进行了探讨，分析了广义相对论中的等效原理和广义协变原理，讨论了爱因斯坦引力场方程，研究了相对性原理、引力场中的时间膨胀、长度收缩和引力波。

The first method used not only the row element but also the column element of covariance matrix to structure a toeplitz matrix; this process accomplishes the function of forward/backward spatial smoothing for multipath signals.

第一种改进的方法不但利用了阵列输出协方差矩阵的行元素，而且还利用了阵列输出协方差矩阵的列元素构造Toeplitz矩阵，实现了前、后向空间平滑解相干的功能。

Based on minimizing the trace of the fusion error covariance matrix, the asynchronous multisensor data fusion algorithm is presented.

研究多传感器异步融合比同步数据融合更为迫切。

Based on the distributed multi-sensor track fusion system, it applies sequence disposal means, multi-sensor track fusion problem with feedback information, on the condition of correlated estimation, is studied, under the rule of minimizing the trace of estimation error covariance matrix, the corresponding fusion algorithm is proposed, also ,the analyse of the simulation is presented.

基于分布式多传感器航迹融合系统，采用序贯处理的方法，研究了相关条件下带反馈信息的多传感器航迹融合问题，在估计误差方差阵迹最小的准则下，导出了相应的融合算法，并进行了仿真分析。

In order to optimize the energy consumption and to prolong the lifetime of networks, two schemes of local tasking node selection in a self-adaptive way are given in the decentralized sensor networks, including the scheme of nearest distance between target and nodes of candidate and the least trace of covariance matrix scheme.

为了优化网络的能耗以延长网络寿命，提出了两种在分布式传感器网络中局部节点自适应选择任务节点[2]的方法，包括目标-候选节点距离最小原则和候选节点协方差矩阵迹最小原则作为任务节点选择调度的两种方法。

The forgetting factor was optimized by reducing the trace of the input error covariance matrix. This factor is able to modify the iterative learning law of control input. The error signal of the feed-forward learning controller was filtered by a zero-phase FIR digital filter.

通过减小系统输入误差协方差矩阵迹的方式得到优化的遗忘因子，来修正控制输入的迭代学习律，同时采用零相位FIR数字滤波器对前馈学习控制器中的误差信号进行滤波处理。

In Chapter 2, the Balanced LS Estimation is defined for the linear model when its error covariance is positive definite or singular. The new estimation as well as the necessary and sufficient conditions is gained for its unbiasedness, efficiency and admissibility.

第2章提出了一般线性回归模型和奇异线性回归模型平衡LS估计的概念，得到回归系数β的平衡LS估计，进而探讨了这种估计的无偏性、有效性和可容许性。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了