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Old and New Methods of Observing Polar Motion

Published online by Cambridge University Press:  27 June 2016

R. O. Vicente
R. O. Vicente*
Affiliation:
Dept. of Applied Mathematics, Faculty of Sciences, Lisbon University, Portugal

Abstract

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The motion of the pole has been observed by means of visual telescopes, employed by the ILS, photographic zenith tubes and astrolabes. It is pointed out the difficulties of combining the results of different types of instruments employing several observation techniques.

The new astronomical methods of Doppler observations on satellites and laser pulses sent to the Moon give another possibility of determining polar motion with greater precision. It is forecast that the results will not agree with the older ones and, in order to compare the methods, it is suggested that stations should be equipped with both techniques of detecting polar motion.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 48: Rotation of the Earth , 1972 , pp. 133 - 135
Copyright
Copyright © Reidel 1972 

References

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