Integrating GPS zenith path-delay measurements into the analysis of geodetic VLBI observations from the European network.

Details Integrating GPS zenith path-delay measurements into the analysis of geodetic VLBI observations from the European network. Integrating GPS zenith path-delay measurements into the analysis of geodetic VLBI observations from the European network.

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999evga.conf..152r&link_type=abstract

13th Working Meeting on European VLBI for Geodesy and Astrometry, p. 152 - 160

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Scientific paper

Estimates of vertical components of site coordinates from "standard" geodesy techniques of analysis of VLBI observations have uncertainties about 3 - 4 times larger than the other components. This is a consequence of the large correlation between the zenith path delay and the vertical component of the stations. The authors want to contribute to the effort of investigating the potencial of new routes, combining the products of different geodesy techniques, to lighten that situation. They present preliminary results from a "hybrid" route of analysis which implements external GPS tropospheric estimates into the VLBI analysis, along with a comparison with results from the "standard" route. At this early stage of the project the "hybrid" route appears as a very promising approach, with first time clear evidence of improvement with respect to the "standard" route.

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