Analysis of rapid C[sub n][sup 2] fluctuations observed during a 5-km communication link experiment
The path-integrated turbulence strength is usually thought of as a parameter that varies slowly with time. In a recent free-space communications experiment the C[subscript n][superscript 2] n value over a 5-km horizontal path was monitored almost continuously for a period of nearly a month. In addit...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Society of Photo-optical Instrumentation Engineers
2010
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| Online Access: | http://hdl.handle.net/1721.1/52702 |
| _version_ | 1826198689294581760 |
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| author | Yarnall, Timothy M. Michael, Steven Moores, John D. Parenti, Ronald R. Wilcox, William E., Jr. |
| author2 | Lincoln Laboratory |
| author_facet | Lincoln Laboratory Yarnall, Timothy M. Michael, Steven Moores, John D. Parenti, Ronald R. Wilcox, William E., Jr. |
| author_sort | Yarnall, Timothy M. |
| collection | MIT |
| description | The path-integrated turbulence strength is usually thought of as a parameter that varies slowly with time. In a recent free-space communications experiment the C[subscript n][superscript 2] n value over a 5-km horizontal path was monitored almost continuously for a period of nearly a month. In addition to well defined and repeatable diurnal fluctuations, strong short-term fluctuations were observed in which the turbulence strength changed by an order of magnitude within a period of minutes. These rapid changes were independently measured by a commercial scintillometer and the high-rate output from the communications transceiver. The characteristics and probable causes for these dynamic atmospheric events and their impact on the design of free-space communication systems are discussed in this article. |
| first_indexed | 2024-09-23T11:08:16Z |
| format | Article |
| id | mit-1721.1/52702 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:08:16Z |
| publishDate | 2010 |
| publisher | Society of Photo-optical Instrumentation Engineers |
| record_format | dspace |
| spelling | mit-1721.1/527022022-10-01T01:31:30Z Analysis of rapid C[sub n][sup 2] fluctuations observed during a 5-km communication link experiment Yarnall, Timothy M. Michael, Steven Moores, John D. Parenti, Ronald R. Wilcox, William E., Jr. Lincoln Laboratory Yarnall, Timothy M. Yarnall, Timothy M. Michael, Steven Moores, John D. Parenti, Ronald R. Wilcox, William E., Jr. The path-integrated turbulence strength is usually thought of as a parameter that varies slowly with time. In a recent free-space communications experiment the C[subscript n][superscript 2] n value over a 5-km horizontal path was monitored almost continuously for a period of nearly a month. In addition to well defined and repeatable diurnal fluctuations, strong short-term fluctuations were observed in which the turbulence strength changed by an order of magnitude within a period of minutes. These rapid changes were independently measured by a commercial scintillometer and the high-rate output from the communications transceiver. The characteristics and probable causes for these dynamic atmospheric events and their impact on the design of free-space communication systems are discussed in this article. Department of the Defense (Contract FA8721-05-C-0002) 2010-03-18T13:37:42Z 2010-03-18T13:37:42Z 2009-05 2009-04 Article http://purl.org/eprint/type/JournalArticle 0277-786X SPIE CID: 73240B-7 http://hdl.handle.net/1721.1/52702 Yarnall, Timothy M. et al. “Analysis of rapid C[sub n][sup 2] fluctuations observed during a 5-km communication link experiment.” Atmospheric Propagation VI. Ed. Linda M. Wasiczko Thomas & G. Charmaine Gilbreath. Orlando, FL, USA: SPIE, 2009. 73240B-7. © 2009 SPIE en_US http://dx.doi.org/10.1117/12.818795 Proceedings of SPIE--the International Society for Optical Engineering Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Society of Photo-optical Instrumentation Engineers SPIE |
| spellingShingle | Yarnall, Timothy M. Michael, Steven Moores, John D. Parenti, Ronald R. Wilcox, William E., Jr. Analysis of rapid C[sub n][sup 2] fluctuations observed during a 5-km communication link experiment |
| title | Analysis of rapid C[sub n][sup 2] fluctuations observed during a 5-km communication link experiment |
| title_full | Analysis of rapid C[sub n][sup 2] fluctuations observed during a 5-km communication link experiment |
| title_fullStr | Analysis of rapid C[sub n][sup 2] fluctuations observed during a 5-km communication link experiment |
| title_full_unstemmed | Analysis of rapid C[sub n][sup 2] fluctuations observed during a 5-km communication link experiment |
| title_short | Analysis of rapid C[sub n][sup 2] fluctuations observed during a 5-km communication link experiment |
| title_sort | analysis of rapid c sub n sup 2 fluctuations observed during a 5 km communication link experiment |
| url | http://hdl.handle.net/1721.1/52702 |
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