Earth Rotation and Gravity Field Parameters from Satellite Laser Ranging

Sosnica, Krzysztof Jakub; Jäggi, Adrian; Thaller, Daniela; Dach, Rolf; Meyer, Ulrich (2014). Earth Rotation and Gravity Field Parameters from Satellite Laser Ranging. Proceedings of the 19th International Workshop on Laser Ranging, Celebrating 50 Year of SLR: Remembering the Past and Planning for the Future.

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We present the results from a simultaneous estimation of the gravity field, Earth rotation parameters, and station coordinates from combined SLR solutions incorporating up to nine geodetic satellites: LAGEOS-1/2, Starlette, Stella, AJISAI, Beacon-C, Lares, Blits and LARES. These solutions cover all three pillars of satellite geodesy and ensure full consistency between the Earth rotation parameters, gravity field coefficients, and geometry-related parameters. We address benefits emerging from such an approach and discuss particular aspects and limitations of the gravity field recovery using SLR data. The current accuracy of SLR-derived polar motion, by the means of WRMS w.r.t. IERS-08-C04 series, is at a level of 118-149 μas, which corresponds to 4 to 5 mm on the Earth’s surface. The WRMS of SLR-derived Length-of-Day, when the gravity field parameters are simultaneously estimated, is 56 μs/day, corresponding to about 26 mm on the ground, and the mean bias of SLR-derived Length-of-Day is 6.3 μs/day, corresponding to 3 mm.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

08 Faculty of Science > Institute of Astronomy

UniBE Contributor:

Sosnica, Krzysztof Jakub; Jäggi, Adrian; Thaller, Daniela; Dach, Rolf and Meyer, Ulrich

Subjects:

500 Science > 520 Astronomy

Language:

English

Submitter:

Pierre Fridez

Date Deposited:

01 May 2015 14:31

Last Modified:

07 Apr 2018 02:29

BORIS DOI:

10.7892/boris.67847

URI:

https://boris.unibe.ch/id/eprint/67847

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