Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999evga.conf..108h&link_type=abstract
13th Working Meeting on European VLBI for Geodesy and Astrometry, p. 108 - 114
Astronomy and Astrophysics
Astronomy
Scientific paper
Since 1990 the European fixed station geodetic Very Long Baseline Interferometry (VLBI) network has been observing on a regular basis in order to determine crustal motion in Europe. Usually the analyses of geodetic VLBI data are set up in two different ways: a) to produce station coordinates for each observation epoch from independent parameter adjustments and b) to compute station coordinates at a reference epoch together with drift rate components simultaneously from solutions where station drifts are modeled directly using vector representation. In this paper the authors present an alternative analysis strategy which uses a two step approach. In a first step all station coordinates are estimated as independent parameters for each session. Then in a second step topocentric drift rate vectors are computed from the individual series of station coordinates and their covariance matrices.
Haas Ruth
Nothnagel Axel
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