Other
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jsrs.meet..173k&link_type=abstract
"Proceedings of the "Journées Systèmes de Référence Spatio-temporels 2007". Observatoire de Paris, 17-19 September 2007. Editor:
Other
Scientific paper
Ring lasers are a new type of instrument in geodesy to measure variations in Earth rotation. The scope is to obtain complementary measurements to the geodetic space techniques like VLBI (Very Long Baseline Interferometry), SLR (Satellite Laser Ranging), or GNSS (Global Navigation Satellite Systems). Employing a completely different type of measurement, they yield different components of the Earth’s rotation. While the geodetic space techniques perform a relative measurement to determine the rotation matrix between the Earth and the observed objects, ring lasers measure the absolute spin rate and are sensitive to motions of the rotation axis with respect to the Earth. They are not sensitive to motions of the rotation axis in space. Thus ring lasers give direct access to polar motion. Other aspects comprise the high temporal resolution for a better sampling of subdaily variations, the continuous operation and the real time availability of the data.
Klugel Thomas
Schlüter
Schreiber Urs
Velikoseltsev Alex
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