协方差

An advantage of this method is that it can be applied when the covariance matrix of the invested projects is positive semi-definite.

该方法的优点在于能够处理各投资项目之间的协方差矩阵为半正定的情形。

The impact of reduced dimension transformation on interference covariance matrix is analyzed.

分析了降维变换对干扰协方差矩阵杂波自由度的影响。

The whole algorithm does not need computing covariance matrix and eigen-decomposition, so the complexity is greatly decreased.

整个算法不需要协方差矩阵的计算和特征值的分解，具有较低的计算复杂度。

This result has extended the positive definitiveness of covariance matrix of continuous sample in theory.

从而本论文推广了连续型样本协方差矩阵的正定性。

In chapter 6, we discuss the adaptive beamforming method when the covariance matrix with desired signal present.

第六章探讨了协方差矩阵中含有信号时自适应波束形成方法。

There are three traditional methods of estimating VaR: Covariance matrix, History simulation and Monte Carlo simulation.

估计VaR的传统方法有三种：协方差矩阵法、历史模拟法和蒙特仁洛模拟法。

It points out the limitation in dead-reckoning and gives out the state covariance matrix.

研究了由里程计进行航迹推算的局限性，给出机器人位姿误差协方差矩阵的更新方程。

Realized covariance matrix is a new measurement of the volatility and correlation of portfolio.

"已实现"协方差矩阵是对投资组合波动性及相关性的一种全新的度量方法。

In this paper, by using the special structure of the covariance matrix, a fast high resolution method based on QR decomposition is presented.

利用阵列输出协方差矩阵的特殊结构，本文提出一种基于QR分解的高分辨谱估计方法及其改进形式。

The new method does not require the formation of the covariance matrix and its eigendecomposition.

不仅使得智能天线的结构尺寸减小了30%，通过多级嵌套维纳滤波器前向递推的方法，子空间的分解和维数确定可同时进行，不需要估计接收信号的协方差矩阵和对其作特征值分解，运算量可以明显降低，收敛速度快。

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