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Design of an extended-range, three-wavelength distance-measuring instrumentThe paper describes an extension of current multiwavelength electromagnetic distance measurement (EDM) techniques which should allow the range of multiwavelength measurements to be extended to approximately 50 km. The basic modification needed is the replacement of the retroreflector commonly used by an active station containing lasers and a microwave source. Because the system will always be operated as a full three-wave-length instrument, accuracies of about 5 x 10 to the -8th at 50 km should be obtainable on a routine basis under reasonably clear weather conditions.
Document ID
19790056260
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Moody, S. E.
(National Bureau of Standards Gaithersburg, MD, United States)
Levine, J.
(National Bureau of Standards, Time and Frequency Div.; Joint Institute for Laboratory Astrophysics, Boulder Colo., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1979
Publication Information
Publication: Tectonophysics
Volume: 52
Subject Category
Instrumentation And Photography
Accession Number
79A40273
Funding Number(s)
CONTRACT_GRANT: NSG-7344
Distribution Limits
Public
Copyright
Other

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