Monthly gravity field solution from GRACE range measurements using modified short arc approach  

作　　者：Shen Yunzhong Chen Qiujie Xu Houze 

机构地区：[1]College of Surveying and Geo-Informatics,Tongji University [2]Center for Spatial Information Science and Sustainable Development [3]Department of Land Surveying and Geo-Informatics,Hong Kong Polytechnic University [4]State Key Laboratory of Geodesy and Earth's Dynamics,Institute of Geodesy and Geophysics,Chinese Academy of Sciences

出　　处：《Geodesy and Geodynamics》2015年第4期261-266,共6页大地测量与地球动力学（英文版）

基　　金：sponsored by National Natural Science Foundation of China(41474017);National Key Basic Research Program of China(973 Program;2012CB957703);sponsored by National Natural Science Foundation of China(41274035);State Key Laboratory of Geodesy and Earth's Dynamics(SKLGED2013-3-2-Z,SKLGED2014-1-3-E);State Key Laboratory of Geo-Information Engineering(SKLGIE2014-M-1-2)

摘　　要：In this paper we present a series of monthly gravity field solutions from Gravity Recovery and Climate Experiment（GRACE） range measurements using modified short arc approach,in which the ambiguity of range measurements is eliminated via differentiating two adjacent range measurements.The data used for developing our monthly gravity field model are same as Tongji-GRACEOl model except that the range measurements are used to replace the range rate measurements,and our model is truncated to degree and order 60,spanning Jan.2004 to Dec.2010 also same as Tongji-GRACE01 model.Based on the comparison results of the C_（2,0）,C_（2,1）,S_（2,1）,and C_（15,15）,S_（15,15）,time series and the global mass change signals as well as the mass change time series in Amazon area of our model with those of Tongji-GRACE01 model,we can conclude that our monthly gravity field model is comparable with Tongji-GRACE01 monthly model.In this paper we present a series of monthly gravity field solutions from Gravity Recovery and Climate Experiment（GRACE） range measurements using modified short arc approach,in which the ambiguity of range measurements is eliminated via differentiating two adjacent range measurements.The data used for developing our monthly gravity field model are same as Tongji-GRACEOl model except that the range measurements are used to replace the range rate measurements,and our model is truncated to degree and order 60,spanning Jan.2004 to Dec.2010 also same as Tongji-GRACE01 model.Based on the comparison results of the C_（2,0）,C_（2,1）,S_（2,1）,and C_（15,15）,S_（15,15）,time series and the global mass change signals as well as the mass change time series in Amazon area of our model with those of Tongji-GRACE01 model,we can conclude that our monthly gravity field model is comparable with Tongji-GRACE01 monthly model.

关 键 词：Satellite geodesy Gravity field model Time-variable gravity field Gravity satellite Gravity Recovery and Climate Experiment （GRACE）Short arc approach Range data Mass change Tongji-GRACE01 

分 类 号：P223[天文地球—大地测量学与测量工程]