2026-08-09T16:26:11Zhttp://doidb.wdc-terra.org/oaip/oai

oai:doidb.wdc-terra.org:62852026-06-10T09:54:38ZDOIDBDOIDB.ICGEM

false4DOIDB.ICGEM 10.5880/icgem.2017.002 Chen, Qiujie College of Surveying and Geo-informatics, Tongji University, Shanghai, China Shen, Yunzhong Chen, Wu Zhang, Xingfu GFZ Data Services 2017 unconstrained static gravity field model ICGEM GRACE-only geodesy EARTH SCIENCE > SOLID EARTH > GEODETICS > GEOID CHARACTERISTICS EARTH SCIENCE > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD Chen, Qiujie College of Surveying and Geo-informatics, Tongji University, Shanghai, China Barthelmes, Franz Franz Barthelmes 0000-0001-5253-2859 GFZ German Research Centre for Geosciences, Potsdam, Germany Reißland, Sven GFZ German Research Centre for Geosciences, Potsdam, Germany Chen, Qiujie College of Surveying and Geo-informatics, Tongji University, Shanghai, China Dataset 10.1002/2014JB011470 10.1007/s00190-016-0889-6 CC BY 4.0 Tongji-Grace02s, a static unconstrained GRACE-only gravity field model up to degree and order 180 was developed by Tongji University under the sponsorship of National Natural Science Foundation of China (41474017). To derive Tongji-Grace02s, the modified short-arc approach which estimates errors of non-conservative acceleration and attitude observations was adopted, and the GRACE-only data (including orbits, range-rates, non-conservative accelerations and attitudes) over the period Jan. 2003 to Jul. 2016 were used. The quality of Tongji-Grace02s is remarkably better than Tongji-GRACE01. In computing Tongji-Grace02s, neither constraint nor regularization was applied.
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