Abstract
The existing old height system of Switzerland (LN02) consists of purely levelled heights without considering gravity measurements. This causes difficulties in the application of modern techniques such as GPS for height determination and in the data exchange with neighboring countries. Therefore, a new height system LHN95, based on geopotential numbers, is being determined at the Federal Office of Topography. LHN95 is treated as a kinematic network with consideration of the Alpine uplift. The corresponding relative vertical movements are determined by repeated observations of the first and second order levelling lines. For LHN95, it was decided to use orthometric heights. This has some advantages when combining levelling with GPS measurements in mountainous regions.
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References
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© 1998 Springer-Verlag Berlin Heidelberg
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Marti, U., Schneider, D. (1998). The New Swiss National Height System LHN95. In: Brunner, F.K. (eds) Advances in Positioning and Reference Frames. International Association of Geodesy Symposia, vol 118. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-03714-0_22
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DOI: https://doi.org/10.1007/978-3-662-03714-0_22
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-08425-6
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