Determination of UT1 and polar motion by the deep space network using very long baseline interferometryMeasurements of UT1 with a formal accuracy as low as 0.6 msec with only 6 hr of data and construction of a radio astrometric catalog of approximately 45 sources whose positions are known to better than 0.05 arcsec are described which were made possible by very long-baseline interferometry (VLBI) with the Deep Space Network (DSN). The characteristics and anticipated performance of the complete VLBI system being implemented within the DSN are discussed. It is noted that one of the capabilities of this system is the measurement of UT1 and polar motion at weekly intervals and that the determinations should be obtained with decimeter accuracy.
Document ID
19790069000
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Fanselow, J. L. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Thomas, J. B. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Cohen, E. J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Macdoran, P. F. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Melbourne, W. G. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Mulhall, B. D. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Purcell, G. H. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Rogstad, D. H. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Skjerve, L. J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Spitzmesser, D. J. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1979
Subject Category
Astronomy
Meeting Information
Meeting: Time and the earth''s rotation; Eighty-second Symposium