摘要
结合已有星历资源的不同特点,给出两种GPS轨道的实时预报方法,分析对比了不同星历应用于轨道实时预报的精度,结果表明,基于超快预报星历的预报效果最优,其7天轨道实时预报精度优于20 m。
On the basis of different characteristics of current ephemerides,two methods for satellite orbit prediction are introduced. Considering the request of real-time, the precision of orbit prediction is analyzed with different ephemerides. The results indicate that the precision of orbit prediction is the best with Ultra-Rapid ephemeris and the precision is better than 20 m for seven days＇ real-time orbit prediction.
出处
《大地测量与地球动力学》
CSCD
北大核心
2012年第1期94-96,共3页
Journal of Geodesy and Geodynamics
关键词
轨道预报
轨道拟合
变分方程
数值积分
星历
orbit prediction
orbit fitting
variational equations
numerical integration
ephemeris
