双星定位的三参数方法及其精度分析

Three-Parameter Positioning Method of Two Geostationary Satellites System With Accuracy Analysis

研究了两颗地球同步轨道卫星 (双星 )定位的几何关系对双星定位精度的影响。设计了双星交汇角、双星俯仰角和双星视角三个参数来刻画双星交汇 ,这三个参数能够反映定位的几何关系。在此基础上得到的双站交汇精度估计算法能适应测站基线长、观测距离远等布站和观测几何关系不好的情形。

In this paper, the positioning precision affected by geometic relationship of two geostationary satellites is investigated. Three parameters, intersection angle, pitching angle and visual angle are designed to describe the geometic relationship of observation intersection. Based on that, a corresponding error propagation algorithm is proposed which can adapt to the bad positioning and bad measurement geometic relationship. At last the results are demonstrated by the simulation.