GRACE-FO卫星非差运动学精密定轨及精度分析  

Zero-Difference Kinematic Precise Orbit Determination and Accuracy Analysis of GRACE-FO Satellite

作　　者：雷宇[1,2] 苏勇 王长青[2] 朱紫彤 黄俊 LEI Yu;SU Yong;WANG Changqing;ZHU Zitong;HUANG Jun(School of Civil Engineering and Geomatics,Southwest Petroleum University,8 Xindu Road,Chengdu 610500,China;State Key Laboratory of Geodesy and Earth’s Dynamics,Innovation Academy for Precision Measurement Science and Technology,CAS,340 Xudong Street,Wuhan 430077,China;School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China;Hubei Luojia Laboratory,129 Luoyu Road,Wuhan 430079,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,A19 Yuquan Road,Beijing 100049,China)

机构地区：[1]西南石油大学土木工程与测绘学院,成都市610500 [2]中国科学院精密测量科学与技术创新研究院大地测量与地球动力学国家重点实验室,武汉市430077 [3]武汉大学测绘学院,武汉市430079 [4]湖北珞珈实验室,武汉市430079 [5]中国科学院大学地球与行星科学学院,北京市100049

出　　处：《大地测量与地球动力学》2023年第11期1178-1182,共5页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41804077);四川省自然科学基金(2022NSFSC1047);湖北珞珈实验室开放基金(220100045);大地测量与地球动力学国家重点实验室开放基金(SKLGED2022-1-1)。

摘　　要：在详细分析非差运动学精密定轨原理和步骤基础上,采用平滑卡尔曼滤波算法,通过自主研发的精密定轨软件对GRACE-FO卫星进行非差运动学精密定轨。结果表明,与官方科学轨道相比,平滑滤波不仅能提高定轨开始阶段的精度,而且整体上定轨精度也得到提升,GRACE-FO C星轨道残差为2~4 cm, GRACE-FO D星轨道残差为3~5 cm。On the basis of detailed analysis of the principle and steps of zero-difference kinematic precise orbit determination,we adopt the smooth Kalman filtering algorithm,and use self-developed precise orbit determination software for zero-difference kinematic precise orbit determination of GRACE-FO satellite.The results show that,compared with the official scientific orbits,the smooth Kalman filtering can not only improve the accuracy of orbit determination at the beginning stage,but also improve the accuracy of orbit determination on the whole.The corresponding orbit residuals of GRACE-FO C and GRACE-FO D satellites are 2-4 cm and 3-5 cm,respectively.

关 键 词：GRACE-FO 非差运动学定轨 平滑卡尔曼滤波 

分 类 号：P228[天文地球—大地测量学与测量工程]