Precise orbit determination for TH02-02 satellites based on BDS3 and GPS observations

作     者：Houzhe ZHANG Bing JU Defeng GU Ying LIU Kai SHAO Xiaojun DUAN Zhiyong HUANG Houzhe ZHANG;Bing JU;Defeng GU;Ying LIU;Kai SHAO;Xiaojun DUAN;Zhiyong HUANG

作者机构：College of ScienceNational University of Defense TechnologyChangsha 410073China National Key Laboratory of Science and Technology on Aerospace Flight DynamicsBeijing Aerospace Control CenterBeijing 100094China MOE Key Laboratory of TianQin MissionTianQin Research Center for Gravitational PhysicsFrontiers Science Center for TianQinCNSA Research Center for Gravitational WavesSun Yat-sen University(Zhuhai Campus)Zhuhai 519082China School of Artificial IntelligenceSun Yat-sen University(Zhuhai Campus)Zhuhai 519082China School of Physics and AstronomySun Yat-sen University(Zhuhai Campus)Zhuhai 519082China Information Engineering UniversityZhengzhou 450001China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2023年第36卷第5期

页      面：475-485页

核心收录：

学科分类：08[工学] 081105[工学-导航、制导与控制] 0811[工学-控制科学与工程] 

基　　金：funded by the National Natural Science Foundation of China(Nos.61803018 and 41874028) the Key Laboratory Found,China(No.6142210200105) the National Key R&D Program of China(No.2020YFA0713502) 

主　　题：BDS3 Multi-GNSS Precise orbit determination Spaceborne GNSS receiver TH02-02 

摘      要：The Tianhui-202(TH02-02)satellite formation,as a supplement to the microwave mapping satellite system Tianhui-201(TH02-01),is the first Interferometric Synthetic Aperture Radar(InSAR)satellite formation-flying system that supports the tracking of BeiDou global navigation Satellite system(BDS3)new B1C and B2a ***,the twin TH02-02 satellites also support the tracking of Global Positioning System(GPS)L1&L2 and BDS B1I&B3I *** the spaceborne receiver employs two independent boards to track the Global Navigation Satellite System(GNSS)satellites,we design an orbit determination strategy by estimating independent receiver clock offsets epoch by epoch for each GNSS to realize the multi-GNSS data fusion from different *** performance of the spaceborne receiver is evaluated and the contribution of BDS3 to the kinematic and reduced-dynamic Precise Orbit Determination(POD)of TH02-02 satellites is *** tracking data onboard shows that the average number of available BDS3 and GPS satellites are 8.7 and 9.1,*** carrier-to-noise ratio and carrier phase noise of BDS3 B1C and B2a signals are comparable to those of ***,strong azimuth-related systematic biases are recognized in the pseudorange multipath errors of B1C and *** pseudorange noise of BDS3 signals is better than that of GPS after eliminating the multipath errors from specific *** the GPS-based reduced-dynamic orbit with single-receiver ambiguity fixing technique as a reference,the results of BDS3-only and BDS3+GPS combined POD are *** Root Mean Square(RMS)of orbit comparison of BDS3-based kinematic and reduced-dynamic POD with reference orbit are better than 7 cm and 3 cm in three-Dimensional direction(3D).The POD performance based on B1C&B2a data is comparable to that based on B1I&*** precision of BDS3+GPS combined kinematic orbit can reach up to 3 cm(3D RMS),which has a more than 25%improvement relative to the GPS-only *** addi