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Proceedings Paper

Optical space-to-ground link availability assessment and diversity requirements
Author(s): William W. Chapman; Michael W. Fitzmaurice
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Paper Abstract

The application of optical space-to-ground links (SGLs) for high speed data distribution from geosynchronous and low earth orbiting satellites (e.g., sensor data from the planned Earth Observing System), for lunar and Mars links, and for links from interplanetary probes has been a topic of considerable recent interest. These optical SGLs could conceivably represent the system''s operational baseline, or could represent backup links in the event of a GEO relay terminal failure. In this paper the availability of optical SGLs for various system/orbit configurations is considered. Single CONUS sites are assessed for their probability of cloud free line of sight (PCFLOS), and cloud free field of view (PCFFOV). PCFLOS represents an availability metric for geosynchronous platforms, while PCFFOV is a relevant performance metric for non-geostationary platforms (e.g., low earth orbiting satellites). Additionally, the availability of multiple ground terminals utilized in a diversity configuration is considered. Availability statistics vs. the number of diversity sites are derived from climatological data bases for CONUS sites.

Paper Details

Date Published: 1 June 1991
PDF: 12 pages
Proc. SPIE 1417, Free-Space Laser Communication Technologies III, (1 June 1991); doi: 10.1117/12.43743
Show Author Affiliations
William W. Chapman, Stanford Telecommunications, Inc. (United States)
Michael W. Fitzmaurice, NASA/Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 1417:
Free-Space Laser Communication Technologies III
David L. Begley; Bernard D. Seery, Editor(s)

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