NDLI: Low cost deep space hybrid optical/RF communications architecture

Content Provider	IEEE Xplore Digital Library
Author	Noreen, G. Shambayati, S. Piazzolla, S. Cesarone, R. Strauss, K. Amoozegar, F.
Copyright Year	2009
Description	Author affiliation: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, M/S 238-420, Pasadena, 91109-8099, USA (Noreen, G.; Shambayati, S.; Piazzolla, S.; Cesarone, R.; Strauss, K.; Amoozegar, F.)
Abstract	This paper reports on a study of hybrid optical/Radio Frequency (RF) architectures for deep space missions. Previous proposed optical deep space communication architectures were generally designed to achieve 90% or better availability 24/7. This study, instead, considered alternative metrics and architectures. It focuses on a strategy to use RF links and existing RF infrastructure for navigation and for communications requiring high availability, and optical communication links only for high volume downlink data. The optical link can then be designed to maximize data volume rather than availability. Utilizing Automatic Repeat Request (ARQ) with this strategy, a high level of completeness is possible even with low link availability - though with an increase in latency and spacecraft memory requirements. This strategy is suitable for deep space missions whose high volume links are dominated by science data that can tolerate long delays. The study found that with this optical downlink strategy, a single ground telescope can provide the principal expected benefit of optical communications (high data volume) at much lower cost than optical infrastructures designed to provide 90% availability 24/7. The study found also that data volume can, in some cases, be maximized by arraying all ground telescopes at a single site so that they have identical weather statistics. This low cost architecture, here named Single Optical Site (SOS), can eventually be augmented with multiple sites to provide high optical availability.
Starting Page	1
Ending Page	15
File Size	675664
Page Count	15
File Format	PDF
ISBN	9781424426218
ISSN	1095323X
DOI	10.1109/AERO.2009.4839374
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-03-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Costs Radio frequency Availability Optical design Optical fiber communication Space missions Downlink Automatic repeat request Delay Telescopes
Content Type	Text
Resource Type	Article
Subject	Aerospace Engineering Space and Planetary Science

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