Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986acasn..27...96z&link_type=abstract
Acta Astron. Sin., Vol. 27, No. 2, p. 96 - 105
Astronomy and Astrophysics
Astronomy
2
Earth Rotation
Scientific paper
There are various techniques used for determination Earth rotation parameters (ERP). In this paper the observation equation suitable for all techniques is given, and the most favorable situation to determine generalized zenith distance is discussed. Under the assumption that all the equivalent observables have the same weight, the optimal conditions for determining ERPs are reduced from the general observation principle. The result looks very simple, yet, it can be widely used for all techniques. It is also shown, that to obtain the optimal ERPs, the distribution of the source vector is as important as that of the station vector.
Zhao Ming
Zhu Shi-Yao
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