大尺度电离层倾斜对短波单站定位误差影响分析

大尺度电离层倾斜对短波单站定位误差影响分析 Effects of Large Scale Ionospheric Tilts on the Error of Single Site Location 苑小华 YUAN Xiaohua 1 first-author 郑辉 ZHENG Hui 1 余飞群 YU Feiqun 1 周晨 ZHOU Chen 2 盲信号处理国家重点实验室 盲信号处理国家重点实验室 National Key Laboratory of Blind Signals Processing National Key Laboratory of Blind Signals Processing 武汉大学电子信息学院 武汉大学电子信息学院 Electronic Information School,Wuhan University Electronic Information School,Wuhan University 针对电离层发生大尺度倾斜引起短波单站定位误差的问题,在三维坐标系中建立了电离层倾斜的近似几何模型,推导了反射点坐标满足的方程,给出了基于牛顿-拉夫森迭代的数值求解方法.通过计算机仿真分析了单站定位误差随电离层倾斜角度、倾斜方向和目标距离的变化. This paper analyzes the effect of large scale ionospheric tilts on the errors of single site location by establishing a model for large scale ionospheric tilts in a three-dimension coordinate. We give a formula including the coordinate of the reflecting point and a numerical resolution to the formula based on Newton-Raphson iterating are given. Then the curve of error of single site location versus tilts angle,direction and target range is given by simulations. 电离层 大尺度倾斜 单站定位 牛顿-拉夫森迭代 误差分析 ionosphere large scale tilts single site location Newton-Raphson iterative analysis of error 10.14188/j.1671-8836.2015.05.014 P352 国防科技重点实验室基金（9140C860207100C86）资助项目 2015-05-01 2021-03-31 5 61