Abstract
In October 1987 a four day satellite GPS campaign was performed over the Åland archipelago to test the possibility of connecting the Swedish and Finnish national height systems. This paper summarizes the gained experiences using 5 WM 101 GPS receivers and the PoPS software.
The computing results for the connection between the two height systems are considerably dependent on the choice of geoidal undulation model and systematic error parameter model. Using the NKG Scandinavian geoid 1989, which is probably the most accurate geoid available for the region, and a bias and tilt parameter model the difference between the Swedish RH70 system and the Finnish N60 system is estimated to 11.4 ± 4.0 cm. An independent check is provided by two connecting border bench marks in northern Scandinavia yielding the difference 19.2 ± 4.2 cm. In view of that merely single frequency GPS receivers were used together with the PoPS software, we consider this result most satisfactory.
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References
Fan, H., 1989 Geoid determination by global geopotential models and integral formulas. Department of Geodesy Report No. 19, Royal Inst. of Tech., Stockholm
Forsberg, R., 1990: NKG Nordic Standard Geoid 1989. Proceedings of the 11:th General Meeting of the Nordic Geodetic Commission, Copenhagen, 7–11 May 1990, pp. 75–82.
Kakkuri, J, E.W. Grafarend and L.E. Sjöberg, 1988: Åland GPS levelling experiment in 1987 — preliminary report on results. In E. Groten and R. Strauss (Eds.): GPS-Techniques Applied to Geodesy adn Surveying, Lecture Notes in Earth Science 19, Springer, pp. 125–130
Kakkuri, J, J. Kääriäinen, 1977: The second levelling of Finland for the Åland archipelago. Publ. FGI No. 82.
Kääriäinen,E., 1966: The second levelling of Finland in 1935–1955. Publ. FGI No. 61.
Rapp, R.H. andJ.Y. Cruz, 1986 The representation of the Earth's gravitational potential in a spherical harmonic expansion to degree 250, Dept. of Geodetic Science and Surveying. Report No. 372, The Ohio State University, Columbus, OHIO.
Sjöberg, L.E., 1986 Comparison of some methods of modifying Stokes' formula. Boll. Geod. e Sci. Aff., No. 3, 229–248.
Sjöberg, L.E., 1988: Experiences with the WM101 GPS receiver. In E. Groten and R. Strauss (Eds.): GPS-Techniques Applied to Geodesy and Surveying, Springer, pp. 107–121.
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Sjöberg, L.E. Åland GPS levelling campaign in 1987. Bulletin Géodésique 65, 209–217 (1991). https://doi.org/10.1007/BF00807264
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DOI: https://doi.org/10.1007/BF00807264