GRACE Follow-On fast steering mirror data analysis
Abstract
On May 22, 2019, this year GRACE Follow-On completed one year in orbit. The spacecraft carry aboard the very first laser ranging interferometer (LRI) as the technology demonstrator. Along with the precise laser ranging observations, the LRI also provides attitude information in terms of pitch and yaw pointing angles relative to the line-of-sight between the two satellites. This attitude data is based on the LRI differential wavefront sensing, which actuates a fast steering mirror to precisely point the laser beam at the distant spacecraft. Here we provide the first insight and analysis of the new attitude data set. Our data analysis is based on one year time-series of fast steering mirror pointing angles. We present the characteristics of the data itself, as well as a comparison with star camera attitude data.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.G51B0573G
- Keywords:
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- 1217 Time variable gravity;
- GEODESY AND GRAVITY;
- 1218 Mass balance;
- GEODESY AND GRAVITY;
- 1225 Global change from geodesy;
- GEODESY AND GRAVITY;
- 1240 Satellite geodesy: results;
- GEODESY AND GRAVITY