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Two-laser optical distance-measuring instrument that corrects for the atmospheric index of refraction.The Wave Propagation Laboratory of the Environmental Research Laboratories of the National Oceanic and Atmospheric Administration has been engaged in the development of dual-wavelength, optical distance-measuring instruments. Recently a new generation of this type of high-accuracy instrument has been completed. Preliminary testing of the new instrument indicates that the original goal of the project, accuracy of better than one part in a million over distances of 5-10 km using averaging times of less than 1 min, is being met. This paper describes the instrument and preliminary test results.
Document ID
19720041639
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Earnshaw, K. B.
(NOAA, Environmental Research Laboratories, Boulder Colo., United States)
Hernandez, E. N.
(Washington, University Seattle, Wash., United States)
Date Acquired
August 6, 2013
Publication Date
April 1, 1972
Publication Information
Publication: Applied Optics
Volume: 11
Subject Category
Masers
Accession Number
72A25305
Funding Number(s)
CONTRACT_GRANT: AF ORDER Y69-829
CONTRACT_GRANT: NASA ORDER W-12929
Distribution Limits
Public
Copyright
Other

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