Laser transmisison through simulated cirrus clouds by one-layer and multiple layer propagation models

Kolb, Ila L.; Cheng, William Y. Y.; Cotton, William R.

doi:10.2514/6.2001-2795

Cited by 1 publication

(1 citation statement)

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“…Cirrus clouds, no matter how thin, will affect laser transmission and those effects can somewhat be quantified with laser transmission models (Kolb et al 2001). By examining a realistic RAMS-generated cirrus cloud data set and inputing average cloud properties into single and multiple layer laser transmission models, understanding of how cirrus affect laser transmission is gained.…”

Section: Discussionmentioning

confidence: 99%

<title>Laser transmission through simulated cirrus clouds</title>

2001

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The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, oatherina and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collectior of information, including suqqestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports ^7045)188)7 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS.REPORT DATE (DD-MM-YYYY) LASER TRANSMISSION THROUGH SIMULATED CIRRUS CLOUDS AUTHOR(S)CAPT KOLB ILA L DATES COVERED (From -To)5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)COLORADO STATE UNIVERSITY SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) ABSTRACT OF THESIS LASER TRANSMISSION THROUGH SIMULATED CIRRUS CLOUDSSince approximately 20% of the globe is covered with cirrus clouds at any given time, it is clear that any airborne or spaceborne system using a laser will intercept cirrus clouds at some point. Cirrus clouds contain a very complex microphysical structure that will affect laser power by scattering and reflecting it away from the intended target, thus reducing efficiency and possibly even making it ineffective.Using two thin cirrus laser transmission models, a single homogeneous cloud layer model and a multiple cloud layer model, laser transmission profiles are generated from a simulated cirrus cloud case created by the RAMS model.Sensitivity studies are performed on the laser transmission model to examine the effects of aerosols and water vapor, ice crystal orientation, multiple scattering contributions, and the differences between the single and multiple layer models. ABSTRACT OF THESIS LASER TRANSMISSION THROUGH SIMULATED CIRRUS CLOUDSSince approximately 20% of the globe is covered with cirrus clouds at any given time, it is clear that any airborne or spaceborne system using a laser will intercept cirrus clouds at some point. Cirrus clouds contain a very complex microphysical structure that will affect laser power by scattering and reflecting it away from the intended target, thus reducing efficiency and possibly even making it ineffective.Using two thin cirrus laser transmission models, a single homogeneous cloud layer

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Section: Discussionmentioning

confidence: 99%