HR: 08:15h
AN: G31A-02    [Abstracts]
TI: Measurement of Geocenter Variations With GNSS
AU: * Hugentobler, U
EM: urs.hugentobler@aiub.unibe.ch
AF: Astronomical Institute, University of Bern, Sidlerstrasse 5, Bern, CH-3012 Switzerland
AU: Beutler, G
EM: gerhard.beutler@aiub.unibe.ch
AF: Astronomical Institute, University of Bern, Sidlerstrasse 5, Bern, CH-3012 Switzerland
AB: The position of the geocenter can only be measured with satellite-geodetic methods. Time series of geocenter coordinates are produced by all three techniques, SLR, DORIS, and GNSS. Geocenter variations, in particular in the axial direction, are affected by orbit models used to represent the satellite trajectories. In particular for the large satellites operated in GNSS constellations the impact of radiation pressure models is significant. The presentation shows the effects and illustrates the underlying mechanisms.
DE: 1240 Satellite geodesy: results (6929, 7215, 7230, 7240)
DE: 1242 Seismic cycle related deformations (6924, 7209, 7223, 7230)
SC: Geodesy [G]
MN: Fall Meeting 2005