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VLBI Geodesy: Techniques and Recent Results

Published online by Cambridge University Press:  04 August 2017

David B. Shaffer
David B. Shaffer*
Affiliation:
Interferometrics Inc.

Extract

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From its inception, it was realized that VLBI had the potential for very precise determinations of baselines between antennas. Since the first early, crude results (Cohen and Shaffer 1971), the data collection systems and analysis techniques have been continuously refined, and VLBI is now producing baseline measurements to accuracies of a few centimeters over trans- and inter-continental distances. Since the Mark III system and the basic techniques of delay and delay rate baseline determination have been previously described (Rogers et al. 1983; Shapiro 1976), and there have been several recent meetings that dealt exclusively with VLBI geodesy techniques (NASA 1980; NOAA 1982), I will concentrate in this review on recent developments in equipment and procedures, followed by presentation of new results. This review is based primarily on the efforts and results of the so-called “East Coast VLBI Group” comprised of staff and support contractors at NASA Goddard Space Flight Center (NASA/GSFC), the NEROC Haystack Observatory, MIT, and the Harvard-Smithsonian Center for Astrophysics. Additional input comes mostly from staff of the National Geodetic Survey (NGS), Onsala Space Observatory, and the Jet Propulsion Laboratory.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 110: VLBI and Compact Radio Sources , 1984 , pp. 365 - 374
Copyright
Copyright © Reidel 1984 

References

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