Improved Models for Earth Orientation Determination

Dennis D. McCarthy and Brent A. Archinal

Abstract:	The accuracy with which reference systems and Earth orientation data can be defined is limited by the systematic errors which arise in the treatment of astronomical and geodetic observations. Constants and models must be re- evaluated and improved, if possible, as measurement precision improves. Both the astronomical and geodetic communities maintain sets of conventional standards which change slowly with time, as well as “current best estimates” for high-precision users of reference systems. The International Earth Rotation Service (IERS) Conven- tions are discussed from the theoretical and applied points of view. Specific constants and models are described.
Published in:	Proceedings of the 52nd Annual Meeting of The Institute of Navigation (1996) June 19 - 21, 1996 Royal Sonesta Hotel Cambridge, MA
Pages:	759 - 764
Cite this article:	McCarthy, Dennis D., Archinal, Brent A., "Improved Models for Earth Orientation Determination," Proceedings of the 52nd Annual Meeting of The Institute of Navigation (1996), Cambridge, MA, June 1996, pp. 759-764.
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