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Progress in satellite gravity recovery from implemented CHAMP,GRACE and GOCE and future GRACE Follow-On missions

查看全文 作　　者：Zheng [1]Wei;Xu [1]Houze 高影响力作者 机构地区：[1]State Key Laboratory of Geodesy and Earth's Dynamics,Institute of Geodesy and Geophysics,Chinese Academy of Sciences高影响力机构 出　　处：《Geodesy and Geodynamics》索引2015年第6卷第4期,共7页高影响力期刊 基　　金：supported by the Main Direction Program of Knowledge Innovation of Chinese Academy of Sciences for Distinguished Young Scholar(KZCX2-EW-QN114);the National Natural Science Foundation of China(41004006,41131067,11173049 and 41274041);the Merit-based Scientific Research Foundation of the State Ministry of Human Resources and Social Security of China for Returned Overseas Chinese Scholars(Z01101);the Open Research Fund Program of the Key Laboratory of Geospace Environment and Geodesy,Ministry of Education,China(11-01-02);the Open Research Fund Program of the Key Laboratory of Geo-Informatics of National Administration of Surveying,Mapping and Geoinformation of China(201322);the Open Research Fund Program of the State Key Laboratory of Geoinformation Engineering,China(SKLGIE2013-M-1-5);the Main Direction Program of Institute of Geodesy and Geophysics,Chinese Academy of Sciences(Y309451045);the Research Fund Program of State Key Laboratory of Geodesy and Earth's Dynamics,China(Y309491050);the Research Fund of the National Civilian Space Infrastructure Project(Y419341034);the Research Fund of the Lu Jiaxi Young Talent and the Youth Innovation Promotion Association of Chinese Academy of Science(Y305171017) 摘　　要：Firstly,the Earth's gravitational field from the past Challenging Minisatellite Payload(CHAMP) mission is determined using the energy conservation principle,the combined error model of the cumulative geoid height influenced by three instrument errors from the current Gravity Recovery and Climate Experiment(GRACE) and future GRACE Follow-On missions is established based on the semi-analytical method,and the Earth's gravitational field from the executed Gravity Field and Steady-State Ocean Circulation Explorer(GOCE) mission is recovered by the space-time-wise approach.Secondly,the cumulative geoid height errors are 1.727 × 10^(-1) m,1.839 × 10 ^(-1) m and 9.025 × 10^(-2) m at degrees 70,120 and 250 from the implemented three-stage satellite gravity missions consisting of CHAMP,GRACE and GOCE,which preferably accord with those from the existing earth gravity field models involving EIGEN-CHAMP03 S,EIGEN-GRACE02 S and GO_CONS_GCF_2_DIR_R1.The cumulative geoid height error is 6.847 × 10^(-2) m at degree 250 from the future GRACE Follow-On mission.Finally,the complementarity among the four-stage satellite gravity missions including CHAMP,GRACE,GOCE and GRACE Follow-On is demonstrated contrastively. 关 键 词：GRACE CHAMP 卫星重力 GOCE 地球重力场模型 大地水准面高 能量守恒原理 卫星有效载荷
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