A demonstration of a transportable radio interferometric surveying system with 3-cm accuracy on a 307-m base line

Details A demonstration of a transportable radio interferometric surveying system with 3-cm accuracy on a 307-m base line A demonstration of a transportable radio interferometric surveying system with 3-cm accuracy on a 307-m base line

Jul 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jgr....81.3587o&link_type=abstract

Journal of Geophysical Research, vol. 81, July 10, 1976, p. 3587-3593.

Astronomy and Astrophysics

Astronomy

3

Deep Space Instrumentation Facility, Geodetic Surveys, Instrument Errors, Radio Interferometers, Earth Orientation, Portable Equipment, Radio Antennas, Rare Gases, Space Communication, Transportation

Scientific paper

A precision geodetic measurement system (Aries, for Astronomical Radio Interferometric Earth Surveying) based on the technique of very long base line interferometry has been designed and implemented through the use of a 9-m transportable antenna and the NASA 64-m antenna of the Deep Space Communications Complex at Goldstone, California. A series of experiments designed to demonstrate the inherent accuracy of a transportable interferometer was performed on a 307-m base line during the period from December 1973 to June 1974. This short base line was chosen in order to obtain a comparison with a conventional survey with a few-centimeter accuracy and to minimize Aries errors due to transmission media effects, source locations, and earth orientation parameters. The base-line vector derived from a weighted average of the measurements, representing approximately 24 h of data, possessed a formal uncertainty of about 3 cm in all components. This average interferometry base-line vector was in good agreement with the conventional survey vector within the statistical range allowed by the combined uncertainties (3-4 cm) of the two techniques.

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