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A very-long-baseline interferometer system for geodetic applicationsA very-long-baseline interferometer system was designed and built for geodetic applications. Each interferometer terminal records a 360-kHz spectral band of noise from a compact extragalactic radio source. The center frequency of the spectral band can be selected to sample sequentially bands covering a much wider frequency range to obtain subnanosecond accuracy in group-delay measurements. A tunnel-diode pulse generator is used to calibrate the delays in the receiver. The necessary sets of algorithms and computer programs have been developed to analyze the data and have allowed the system to be employed to make accurate determinations of vector baselines, radio-source positions, polar motion, and universal time.
Document ID
19760049323
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Whitney, A. R.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Rogers, A. E. E.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Hinteregger, H. F.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Knight, C. A.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Levine, J. I.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Lippincott, S.
(Haystack Observatory Westford, Mass., United States)
Clark, T. A.
(NASA Goddard Space Flight Center Greenbelt, Md., United States)
Shapiro, I. I.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Robertson, D. S.
(MIT Cambridge, Mass., United States)
Date Acquired
August 8, 2013
Publication Date
May 1, 1976
Publication Information
Publication: Radio Science
Volume: 11
Subject Category
Instrumentation And Photography
Accession Number
76A32289
Funding Number(s)
CONTRACT_GRANT: F23601-71-C-0092
CONTRACT_GRANT: NSF MPS-71-02109A07
CONTRACT_GRANT: NSF DES-74-22712
Distribution Limits
Public
Copyright
Other

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