Abstract
The combined adjustment between the National Astro-Geodetic Network and the National GPS2000 Geodetic network in China is described. In this paper, measurements of astro-geodetic network had been taken for nearly 60 years from early 1920’ to 1980’. Some astro-geodetic points may have moved during such a long time period, so coordinate analysis for points co-located in the two networks is very important. The factors which influence combined adjustment, such as earth’s crustal movement, the change of astronomic system, geoid improvement, etc., must be analyzed in advance. In this paper, the measurements and their accuracies are also introduced together with mathematical and stochastic model used in the adjustmen. Due to the huge number of unknowns (about 150 thousands), the solution strategy for large scale equation using PC is also described. Satisfied results are obtained after the combined adjustment
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© 2009 Springer-Verlag Berlin Heidelberg
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Pengfei, C., Yingyan, C., Jinzhong, M. (2009). Combined Adjustment of National Astro-Geodetic Network and National GPS2000 Geodetic Network. In: Sideris, M.G. (eds) Observing our Changing Earth. International Association of Geodesy Symposia, vol 133. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85426-5_11
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DOI: https://doi.org/10.1007/978-3-540-85426-5_11
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-85425-8
Online ISBN: 978-3-540-85426-5
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