Processing of the NKG 2003 GPS Campaign

摘要

The NKG 2003 GPS campaign was carried out from September 28th to October 4th, 2003 as a co-operation between members of NKG and the Baltic Countries. The aim of the campaign is, according to resolution No 3 of the 14th General Meeting of NKG, "he development of a unified ETRS89 reference frame on the cm level for the Nordic area and of formulas for transformation from such a reference frame to the national realizations of ETRS89, as well as the transformation from ITRF to the unified ETRS89 reference frame." It was concluded that it would be a good idea to process the GPS campaign using all the different software packages available within the working group. The campaign was processed by four analysis centres, using three different softwares: 1.NMA, Torbjφrn N0rbech, GIPSY/OASIS II 2.OSO, Martin Lidberg, GAMIT/GLOBK 3.LMV, Lotti Jivall, Bernese version 5.0 4.KMS, Mette Weber /Henrik R0nnest, Bernese version 4.2 This paper presents the four individual solutions and the comparison and combination of them. Problems in the data analysis and differences between the solutions are discussed. Final coordinates in ITRF2000 epoch 2003.75 from the campaign are included.