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Free Space Optical Link Utilizing a Modulated Retro-Reflector Intended for Planetary Duplex Communication Links Between an Orbiter and Surface UnitPresented are simulation and experimental results that provide duplex optical-free space communication links with minimal power and pointing requirements by using a modulated retro-reflector (MRR) for planetary communications. The design is the MRR resides on the surface of a planet or moon, where energy is scarce, while the source of the communication laser resides on an orbiter to achieve satellite-to-ground communications. Also, a simulated scenario using the Mars Reconnaissance Orbiter (MRO) is provided for real world potential results. The information sent through this communication path can range from raw scientific data to multimedia files such as videos and pictures. Bidirectional communications is established with the MRR by using a nested pulse position modulation (PPM) structure. This modulation scheme is then evaluated for its validity in a proof-of-concept experiment. Initial results indicate a promising return-link performance of at least 300 kbps in the nested arrangement.





Document ID
20200000354
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Booth, Stephanie (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
January 16, 2020
Publication Date
January 6, 2020
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Optics
Report/Patent Number
GRC-E-DAA-TN75680
Meeting Information
Meeting: AIAA SciTech Forum
Location: Orlando, FL
Country: United States
Start Date: January 6, 2020
End Date: January 10, 2020
Sponsors: American Institute of Aeronautics and Astronautics (AIAA)
Funding Number(s)
WBS: 277985.04.05.03.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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