Extinction imagers for measurements of atmospheric beam transmittance
Optical beam transmittance for a horizontal path of sight through the atmosphere may be measured with transmissometers, which typically are double-ended, with source and a receiver at opposite ends of the path. Determination of the beam transmittance for longer paths is more challenging in some appl...
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Published in: | Applied optics (2004) 2019-07, Vol.58 (20), p.5486 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Optical beam transmittance for a horizontal path of sight through the atmosphere may be measured with transmissometers, which typically are double-ended, with source and a receiver at opposite ends of the path. Determination of the beam transmittance for longer paths is more challenging in some applications, such as monitoring the surround of a ship at sea or an urban environment. Extinction imaging is a new, to the best of our knowledge, method we have developed for determining the beam transmittance and effective path extinction coefficient over extended atmospheric paths in multiple directions with a single-ended system. Our new advances to the classical theory are enabled by use of calibrated imagers operating in visible, near-infrared, or short-wave infrared wave bands. This article presents the theory, hardware, and tests with supporting instrumentation, including transmissometers and point scatter meters. |
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ISSN: | 1559-128X 2155-3165 |
DOI: | 10.1364/AO.58.005486 |