Abstract A newtork of VLBI and GPS sites in Canada will provide a framework for precise geodetic and geodynamic observations to study continent-wide crustal deformations, post-glacial uplift and plate tectonics. The VLBI component will consist of three permanent stations with a −3000-km baseline located on the geologically stable Canadian Shield as the principal calibration line; it will facilitate continuous monitoring of the earth's rotational dynamics and by means of collocated GPS receivers will serve to maintain the accuracy and the long-term stability of GPS satellite orbit computations. A mobile VLBI system will be used to establish fiducial points with a spacing of about 1000-km to provide a reference for high-precision regional GPS surveys. The unique Canadian VLBI data acquisition and processing system features time-domain multiplexing, a wave-front clock and 24 Mb/sec data recording on standard video cassettes. High-precision differential GPS positions with uniform spacing of about 500-km will complement the VLBI network; these will be reoccupied at regular intervals to facilitate construction of a strain map of Canada. Absolute gravity observations will be carried out at most VLBI and GPS sites to provide additional constraints for geophysical interpretation.∗ Geological Survey of Canada Contribution Number 30286
Plans for VLBI and GPS monitoring network for geodesy and geodynamics in Canada
Advances in Space Research ; 6 , 9 ; 75-78
01.01.1986
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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