摘要
通过微分方程组数值解法计算两颗观测卫星的三维位置,在此基础上运用双星逐点交汇思路,建立定位中值估计与优化模型得到空间飞行器主动段轨道估计,并对存在的三轴指向误差进行估计,提出位置半径作为考虑系统误差下模型精度提高的判断标准.
Numerical solution of differential equations was used to calculate two observation satellites＇ three-dimensional position. Based on the calculation, the positioning middle value estimation model and the optimization model were built to obtain the orbit and the existing three axis pointing error estimation, with the idea of Bi-satellite positioning. Position radius was put forward as the judgment standard of the precision improving under the consideration of system error model.
出处
《数学的实践与认识》
CSCD
北大核心
2013年第14期197-203,共7页
Mathematics in Practice and Theory
基金
电子科技大学中央高校科研基金项目(A03008023401006)
关键词
双星定位
轨道估计
位置半径
三轴指向误差
Bi-sateUite positioning
orbit estimation
position radius
3-axis pointing error
