【作者】 冯来平； 贾小林； 吴显兵； 徐天河；

【Author】 FENG Lai-ping,JIA Xiao-lin,WU Xian-bing,XU Tian-he (Xi’an Research Institute of Surveying and Mapping,Xi’an 710054,China)

【机构】 西安测绘研究所；

【摘要】 为了由多个数据分析中心定轨结果得到综合轨道,提出了一种基于抗差M估计和动力学平滑的轨道综合方法.该方法利用抗差M估计,采用降权的方法抵制了轨道异常影响,从而使综合轨道更为合理;针对综合轨道不连续问题,采用动力学信息平滑得到了连续的综合轨道.为了证明方法的正确性,用IGS轨道和激光数据作为外部检核,结果表明:综合轨道具有和IGS轨道相当的精度,并且与之具有较高一致性.更多还原

【Abstract】 To get combinition orbit from muti-Analysis Center solution,a new method based on robust M estimation and dynamics smoothing is presented.This method makes combined orbit more reasonable by utilizing decreasing weigh of singular data based on M estimation.The discrete orbit can be smoothed with dynamic information to avoid the an continuous orbit.In order to prove the correctness of methods,the IGS orbit and the lasering data are used as external check standards, and the results show:the combination orbit is consistent with the IGS orbit on precision and consistency.更多还原