The impact analysis of corrections to GOCE satellite gravity gradient observations by accounting for temporal gravity field variations
As an important data source for high-degree static gravity field recovery, the gravity gradient observations from GOCE satellite should be processed prior to gravity field estimation by removing the temporal gravity field variations. In this study, the data processing method to account for the tempo...
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doaj-7068af13e4c3480aa4d04d38f6cc65cb2021-08-18T02:32:46ZzhoSurveying and Mapping PressActa Geodaetica et Cartographica Sinica1001-15951001-15952021-03-0150332433210.11947/j.AGCS.2021.2020023120210305The impact analysis of corrections to GOCE satellite gravity gradient observations by accounting for temporal gravity field variationsCHEN Jianhua0ZHANG Xingfu1SHEN Yunzhong2CHEN Qiujie3LI Weichao4Department of Surveying and Mapping, Guangdong University of Technology, Guangzhou 510006, ChinaDepartment of Surveying and Mapping, Guangdong University of Technology, Guangzhou 510006, ChinaCollege of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, ChinaInstitute of Geodesy and Geo-information, University of Bonn, Bonn 53121, GermanyDepartment of Surveying and Mapping, Guangdong University of Technology, Guangzhou 510006, ChinaAs an important data source for high-degree static gravity field recovery, the gravity gradient observations from GOCE satellite should be processed prior to gravity field estimation by removing the temporal gravity field variations. In this study, the data processing method to account for the temporal gravity field variations in GOCE gradiometric data is discussed, to better remove the influence of temporal gravity field variations, the standard and background models from ESA are updated. Consequently, high-degree static gravity field models can be directly determined from the self-processed GOCE Level 1b data. To discuss the impacts of temporal gravity field variations on high-degree static gravity field modelling, we design three different data processing schemes to remove the temporal gravity field variations. Our results show that the temporal gravity field variations have an effect on deriving high-degree gravity field models, with a maximum geoid height difference of above 1 cm over some particular regions. Therefore, during deriving high-degree static gravity field solution from GOCE data, we suggest that updating standard and background models are better to mitigate the effect of temporal gravity field variations.http://xb.sinomaps.com/article/2021/1001-1595/2021-3-324.htmgoce satellitegravity gradientcorrections of temporal gravity field variationsgravity field recovery |
collection |
DOAJ |
language |
zho |
format |
Article |
sources |
DOAJ |
author |
CHEN Jianhua ZHANG Xingfu SHEN Yunzhong CHEN Qiujie LI Weichao |
spellingShingle |
CHEN Jianhua ZHANG Xingfu SHEN Yunzhong CHEN Qiujie LI Weichao The impact analysis of corrections to GOCE satellite gravity gradient observations by accounting for temporal gravity field variations Acta Geodaetica et Cartographica Sinica goce satellite gravity gradient corrections of temporal gravity field variations gravity field recovery |
author_facet |
CHEN Jianhua ZHANG Xingfu SHEN Yunzhong CHEN Qiujie LI Weichao |
author_sort |
CHEN Jianhua |
title |
The impact analysis of corrections to GOCE satellite gravity gradient observations by accounting for temporal gravity field variations |
title_short |
The impact analysis of corrections to GOCE satellite gravity gradient observations by accounting for temporal gravity field variations |
title_full |
The impact analysis of corrections to GOCE satellite gravity gradient observations by accounting for temporal gravity field variations |
title_fullStr |
The impact analysis of corrections to GOCE satellite gravity gradient observations by accounting for temporal gravity field variations |
title_full_unstemmed |
The impact analysis of corrections to GOCE satellite gravity gradient observations by accounting for temporal gravity field variations |
title_sort |
impact analysis of corrections to goce satellite gravity gradient observations by accounting for temporal gravity field variations |
publisher |
Surveying and Mapping Press |
series |
Acta Geodaetica et Cartographica Sinica |
issn |
1001-1595 1001-1595 |
publishDate |
2021-03-01 |
description |
As an important data source for high-degree static gravity field recovery, the gravity gradient observations from GOCE satellite should be processed prior to gravity field estimation by removing the temporal gravity field variations. In this study, the data processing method to account for the temporal gravity field variations in GOCE gradiometric data is discussed, to better remove the influence of temporal gravity field variations, the standard and background models from ESA are updated. Consequently, high-degree static gravity field models can be directly determined from the self-processed GOCE Level 1b data. To discuss the impacts of temporal gravity field variations on high-degree static gravity field modelling, we design three different data processing schemes to remove the temporal gravity field variations. Our results show that the temporal gravity field variations have an effect on deriving high-degree gravity field models, with a maximum geoid height difference of above 1 cm over some particular regions. Therefore, during deriving high-degree static gravity field solution from GOCE data, we suggest that updating standard and background models are better to mitigate the effect of temporal gravity field variations. |
topic |
goce satellite gravity gradient corrections of temporal gravity field variations gravity field recovery |
url |
http://xb.sinomaps.com/article/2021/1001-1595/2021-3-324.htm |
work_keys_str_mv |
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