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EFFECT OF INNER SCALE ATMOSPHERIC SPECTRUM MODELS ON SCINTILLATION IN ALL OPTICAL TURBULENCE REGIMES
| Title: | EFFECT OF INNER SCALE ATMOSPHERIC SPECTRUM MODELS ON SCINTILLATION IN ALL OPTICAL TURBULENCE REGIMES . |
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| Name(s): |
Mayer, Kenneth, Author Young, Cynthia, Committee Chair University of Central Florida, Degree Grantor |
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| Type of Resource: | text | |
| Date Issued: | 2007 | |
| Publisher: | University of Central Florida | |
| Language(s): | English | |
| Abstract/Description: | Experimental studies have shown that a "bump" occurs in the atmospheric spectrum just prior to turbulence cell dissipation.1,3,4 In weak optical turbulence, this bump affects calculated scintillation. The purpose of this thesis was to determine if a "non-bump" atmospheric power spectrum can be used to model scintillation for plane waves and spherical waves in moderate to strong optical turbulence regimes. Scintillation expressions were developed from an "effective" von Karman spectrum using an approach similar to that used by Andrews et al.8,14,15 in developing expressions from an "effective" modified (bump) spectrum. The effective spectrum extends the Rytov approximation into all optical turbulence regimes using filter functions to eliminate mid-range turbulent cell size effects to the scintillation index. Filter cutoffs were established by matching to known weak and saturated scintillation results. The resulting new expressions track those derived from the effective bump spectrum fairly closely. In extremely strong turbulence, differences are minimal. | |
| Identifier: | CFE0001559 (IID), ucf:47141 (fedora) | |
| Note(s): |
2007-05-01 M.S. Sciences, Department of Mathematics Masters This record was generated from author submitted information. |
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| Subject(s): |
scintillation atmospheric power spectrum Rytov approximation |
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| Persistent Link to This Record: | http://purl.flvc.org/ucf/fd/CFE0001559 | |
| Restrictions on Access: | public | |
| Host Institution: | UCF |
