Precision Surveying Using Radio Interferometry

by James W. Ryan, Mathematician; Geophysics Branch, Goddard Space Flight Center, Greenbelt, Md.,
Jill J. Wittels, Research Assoc.; Dept. of Earth and Planetary Sci., Massachusetts Inst. of Tech., Cambridge, Mass.,
Alan R. Whitney, Member; VLBI Group, Haystack Observatory, Westford, Mass.,
Irwin I. Shapiro, Prof.; Dept. of Earth and Planetary Sci. and Dept. of Physics, Massachusetts Inst. of Tech., Cambridge, Mass.,
Alan E.E. Rogers, Group Leader; VLBI Group, Haystack Observatory, Westford, Mass.,
Douglas S. Robertson, Geodesist; Gravity, Astronomy, and Satellite Branch, National Geodetic Survey, Rockville, Md.,
Chopo Ma, Research Assoc.; Dept. of Physics and Astronomy, Univ. of Maryland, College Park, Md.,
Curtis A. Knight, Member; VLBI Group, Haystack Observatory, Westford, Mass.,
Hans F. Hinteregger, Member; VLBI Group, Haystack Observatory, Westford, Mass.,
Charles C. Counselman, III, Assoc. Prof.; Dept. of Earth and Planetary Sci., Massachusetts Inst. of Tech., Cambridge, Mass.,
William D. Cotton, Research Assoc.; Dept. of Earth and Planetary Sci., Massachusetts Inst. of Tech., Cambridge, Mass.,
Brian E. Corey, Research Assoc.; Dept. of Earth and Planetary Sci., Massachusetts Inst. of Tech., Cambridge, Mass.,
Robert Coates, Sr. Scientist; Applications Directorate, Goddard Space Flight Center, Greenbelt, Md.,
Thomas A. Clark, Staff Scientist; Lab. for Extraterrestrial Physics, Goddard Space Flight Center, Greenbelt, Md.,


Serial Information: Journal of the Surveying and Mapping Division, 1978, Vol. 104, Issue 1, Pg. 25-34


Document Type: Journal Paper

Abstract: The application of Very long baseline Interferometry (VLBI) to surveying is reviewed. An examination of the error budget for the VLBI observing system in use by the GSFC/HO/MIT VLBI team is presented, and methods for decreasing the effects of the various errors sources are reviewed. Results from recent VLBI experiments are presented. These results show millimeter level repeatability on a baseline 1.4-km in length and 10-cm level repeatability on a 4,000-km baseline from Massachusetts to California. Results for polar motion and UT1 determined from VLBI observations are presented and compared with determinations from the Bureau International de l'Heure, the primary international service for polar motion, and with the determinations from the Doppler Satellite System. The Doppler and VLBI determinations are seen to exhibit a common trend not seen in the BIH values.

Subject Headings: Telescopes | Geomatic surveys | Motion (dynamics) | Errors (statistics) | Doppler systems | Budgets | Satellites | North America | United States | California | Massachusetts

Services: Buy this book/Buy this article

 

Return to search