摘要
对天基光学观测GEO空间目标定轨方法进行了研究。根据单位矢量法的条件方程组,推导了用于初轨计算的约束总体最小二乘法,给出了能估计测量系统误差的轨道改进方法。仿真结果表明:用该法可提高初轨精度,轨道改进的收敛性能好。
The orbit determination for GEO objects using space based optical observations was studied in this paper. According to the conditional equations of unit vector method, the constrained total least squares (CTLS) method was proposed for computing the preliminary orbit. The orbit improvement which could estimate the system error of measurements was given out. The simulation results showed that the CTLS method could improve the accuracy of preliminary orbit over the least square method and the orbit improvement had excellent convergence behavior.
出处
《上海航天》
2015年第6期34-38,共5页
Aerospace Shanghai
关键词
初轨确定
单位矢量法
约束总体最小二乘
轨道改进
Preliminary orbit determination
Unit vector method
Constrained total least squares
Orbit improvement