Orbit determination and time synchronization for a GEO/IGSO satellite navigation constellation with regional tracking network

作     者：ZHOU ShanShi HU XiaoGong WU Bin LIU Li QU WeiJing GUO Rui HE Feng CAO YueLing Wu XiaoLi ZHU LingFeng SHI Xin TAN HongLi 

作者机构：Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Graduate University of Chinese Academy of SciencesBeijing 100049China Beijing Global Information Application and Development CenterBeijing 100094China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2011年第54卷第6期

页      面：1089-1097页

核心收录：

学科分类：08[工学] 080401[工学-精密仪器及机械] 081105[工学-导航、制导与控制] 081601[工学-大地测量学与测量工程] 0804[工学-仪器科学与技术] 0816[工学-测绘科学与技术] 0825[工学-航空宇航科学与技术] 0811[工学-控制科学与工程] 

基　　金：supported by the Shanghai Committee of Science and Technology,China (Grant No.11ZR1443500) the National Natural Science Foundation of China (Grant No.11033004) 

主　　题：POD time synchronization clock errors elimination SLR evaluation 

摘      要：Aiming at regional services,the space segment of COMPASS (Phase I) satellite navigation system is a constellation of Geostationary Earth Orbit (GEO),Inclined Geostationary Earth Orbit (IGSO) and Medium Earth Orbit (MEO) *** orbit determination (POD) for the satellites is limited by the geographic distribution of regional tracking *** time synchronization (TS) system is developed to supplement the regional tracking network,and satellite clock errors and orbit data may be obtained by simultaneously processing both tracking data and TS ***,inconsistency between tracking system and TS system caused by remaining instrumental errors not calibrated may decrease navigation *** the other hand,POD for the mixed constellation of GEO/IGSO/MEO with the regional tracking network leads to parameter estimations that are highly *** example of correlation is found between GEO s orbital elements and its clock *** estimate orbital elements and clock errors for a 3GEO+2IGSO constellation in this study using a multi-satellite precise orbit determination (MPOD) strategy,with which clock error elimination algorithm is applied to separate orbital and clock estimates to improve numerical *** Laser Ranging (SLR) data are used to evaluate User Ranging Error (URE),which is the orbital error projected on a receiver s line-of-sight ***-way radio-wave time transfer measurements are used to evaluate clock *** with data from the regional tracking network,we conclude that the fitting of code data is better than 1 m in terms of Root-Mean-Square (RMS),and fitting of carrier phase is better than 1 *** orbital evaluation,difference between computed receiver-satellite ranging based on estimated orbits and SLR measurements is better than 1 m (RMS).For clock estimates evaluation,2-hour linear-fitting shows that the satellite clock rates are about 1.E-10 s/s,while receiver clock rates a