New Mathematical Model for Reference Point Determination of an Azimuth-Elevation Type Radio Telescope
Publication: Journal of Surveying Engineering
Volume 135, Issue 4
Abstract
The observations of geodetic very long baseline interferometry (VLBI) measurements refer to an invariant point of the radio telescope. This point is often called the reference point. For the interpretation of VLBI results it is necessary to know the position of this invariant point and its possible variation with time. Only the knowledge of the reference point makes it possible to combine VLBI results with results from other colocated techniques and in the framework of the global geodetic observing system (GGOS). Within the GGOS an automated monitoring of the reference points and therefore of the local-tie vectors at colocation stations is discussed earlier in other studies. In this paper a new mathematical model is described to allow such an automated monitoring of the reference point of an azimuth-elevation type radio telescope.
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Acknowledgments
The writer would like to thank the anonymous reviewers for their valuable comments. This research has been supported by Deutsche Forschungsgemeinschaft (DFG) (Grant No. UNSPECIFIEDHE5213/2–1).
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Published In
Journal of Surveying Engineering
Volume 135 • Issue 4 • November 2009
Pages: 131 - 135
Copyright
© 2009 ASCE.
History
Received: Aug 14, 2008
Accepted: Apr 14, 2009
Published online: Apr 23, 2009
Published in print: Nov 2009
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