坐标变换最优线性滤波中测量噪声的二阶近似方法  

The 2nd order approximation of measurement noise in optimum linear filtering with coordinate conversion

作　　者：陈建春[1] 丁鹭飞[1] 徐少莹[1] 

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071

出　　处：《西安电子科技大学学报》2001年第1期13-17,共5页Journal of Xidian University

摘　　要：讨论了最优线性滤波中非线性测量方程的坐标变换线性化近似处理问题 ,利用多项式近似对坐标变换后的等效测量噪声性质进行了分析 ,导出了在低阶非线性近似时等效测量噪声的统计特性计算的一般公式 .最后就单基地雷达二维测量情况 ,分别给出了在一阶、特别是二阶近似时等效测量噪声的均值和协方差矩阵的计算关系式 .The linear approximation problem of nonlinear measurement equations in optimum linear filtering with coordinate conversion is discussed. The equivalent noise properties after the coordinate conversion is analyzed by utilizing the polynomial approximation method. The general formulas for calculating the statistical properties of the measurement noise in lower order cases are derived. For the monostatic radar application, the statistical means and covariance matrices in the 1st and 2nd order approximation of the equivalent measurement noise are also given.

关 键 词：最优线性滤波 坐标变换 非线性近似 测量噪声 

分 类 号：TN713[电子电信—电路与系统]