GOCE level 1b data processing

被引：45

作者：

Frommknecht, Bjoern ^{[1
]}

Lamarre, Daniel ^{[1
]}

Meloni, Marco ^{[1
]}

Bigazzi, Alberto ^{[1
]}

Floberghagen, Rune ^{[1
]}

机构：

[1] ESA ESRIN, I-00044 Frascati, Italy

来源：

JOURNAL OF GEODESY | 2011年 / 85卷 / 11期

关键词：

GOCE; Electrostatic gravity gradiometer; Gravity gradient determination; Star tracker; Satellite to satellite tracking instrument; Fusion of gradiometer and star tracker data;

D O I：

10.1007/s00190-011-0497-4

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In this article, the processing steps applied to the raw GOCE science payload instrument data (level 0) in order to obtain input data for the gravity field determination (level 1b) are described. The raw gradiometer measurements, which are given at the level of control voltages, have to be transformed into accelerations and gradients. For the latter step, knowledge about the GOCE attitude is required, which is provided by the star trackers. In addition, the data of the satellite to satellite tracking instrument are used to date the measurements, after its clock error has been corrected. All intermediate steps of the processing flow are described. Together with the explanation of the processing flow, an overview of the main level 1b products is given. The final part of the article discusses the means of quality control of the L1b data currently used and gives an outlook on potential processor evolutions.

引用

页码：759 / 775

页数：17