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Requirements for Earth Rotation Parameters

Published online by Cambridge University Press:  30 March 2016

Dennis D. McCarthy
Dennis D. McCarthy*
Affiliation:
U.S. Naval Observatory, Washington, D.C. 20390, USA

Abstract

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Observations of Earth orientation parameters (polar motion and Universal Time) have reached a level of accuracy which challenges the definition of the reference systems which these observations seek to relate. Observational accuracies of better than in polar motion and in Universal Time are now routinely available. Urgent requirements therefore exist now for the IAU to take a fresh look at the concepts and definitions of the reference systems as well as reference frames. Of particular concern are the definitons of the equinox, the terrestrial reference pole, the zero of longitude and sidereal time.

Type
Joint Discussions
Information
Highlights of Astronomy , Volume 7: Highlights of Astronomy. As presented at the XIXth General Assembly of the IAU, 1985 , 1986 , pp. 63 - 64
Copyright
Copyright © Reidel 1986

References

1. Gaposchkin, E.M. and Kolaczck, B. (eds.) 1981, Reference Coordinate Systems for Earth Dynamics, D. Reidel Publishing Co., Co., Dordrecht Holland.Google Scholar
2. Melbourne, W., Anderle, R., Feissel, M., King, R., McCarthy, D., Smith, D., Tapley, B., Vicente, R., 1983, Project Merit Standards, U.S. Naval Observatory Circular No. 167, Washington, D.C. Google Scholar