Earth rotation parameter and variation during 2005–2010 solved with LAGEOS SLR data

LAGEOS-1 spin determination, using comparisons between Graz kHz SLR data and simulations

kHz SLR data contains unique information about the measured targets; this information allows e.g. determination of spin parameters (spin period, spin direction, spin axis orientation) of various satellites, using various methods for different spin periods / satellites: Spectral analysis for spin periods of 2 s (AJISAI (Kirchner et al, 2007)), simulations for spin periods of 77.5 s (GP-B), and c...

Time Measurement and Earth Rotation

Earth Rotation Variations – Long Period

3.11.

Modeling spin parameters of Ajisai, LARES and the other geodetic satellites with SLR data

The Satellite Laser Ranging (SLR) data allows for the spin parameters determination of the fully passive, geodetic satellites. We have spectrally analyzed the long time series of the Full Rate SLR data delivered by the global network of the SLR stations and obtained information on the spin parameters, and the spin evolution, of the following satellites: Ajisai, LAGEOS-1, LAGEOS-2, LARES, Larets...

The impact of the new CHAMP and GRACE Earth gravity models on the measurement of the general relativistic Lense–Thirring effect with the LAGEOS and LAGEOS II satellites

Among the effects predicted by the General Theory of Relativity for the orbital motion of a test particle, the post-Newtonian gravitomagnetic LenseThirring effect is very interesting and, up to now, there is not yet an undisputable experimental direct test of it. To date, the data analysis of the orbits of the existing geodetic LAGEOS and LAGEOS II satellites has yielded a test of the LenseThir...