中国SLR网独立测定ERP和定轨的精度估计

AN ESTIMATION OF POSSIBLE ACCURACIES INDETERMINING LAGEOS ORBIT AND ERPINDEPENDENTLY BY THE CHINESE SLR NETWORK

中国的SLR网目前已初具规模，预计中国的SLR网将于1990年投入全面的工作。本文选取了与中国SLR网台站分布状况基本相同的北美五个SLR站的实测资料独立解算卫星的轨道和地球自转参数（ERP），并与由全球SLR网测定的结果进行了比较。由此论证了中国SIR网今后独立定轨和测定ERP可以达到的精度。保守的估计：测定ERP的精度可优于10mas，定轨精度（十天弧段）可优于50cm本文还根据局部网的特点，提出了复弧法的解算方法。

: The Development of the Chinese SLR network is well advanced It is anticipated this network will be placed into full operation in 1990 Based on the actual observation data of 5 SLR stations of North America which form a network having a configuration similar to that of the Chinese SLR network the LAGEOS satellite orbit and ERP were determined The results thus obtained were compared with those from global SLR network The possible accuracies in determining LAGEOS orbit and ERP independen tly by the Chinese SLR network were inferred from this comparison It is conservativ ely estimated that the LAGEOS satellite orbit (10 day's arc) and ERP can be determ ined to better than 50cm and lOmas respectively According to the characteristics of lo cal SLR network, a multi-arc method of simultaneously solving satellite orbit and ERP is also suggested