19 March 2013 A post-processing receiver for the lunar laser communications demonstration project
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Abstract
The Lunar Laser Communications Demonstration Project undertaken by MIT Lincoln Laboratory and NASA’s Goddard Space Flight Center will demonstrate high-rate laser communications from lunar orbit to the Earth. NASA’s Jet Propulsion Laboratory is developing a backup ground station supporting a data rate of 39 Mbps that is based on a non-real-time software post-processing receiver architecture. This approach entails processing sample-rate-limited data without feedback in the presence high uncertainty in downlink clock characteristics under low signal flux conditions. In this paper we present a receiver concept that addresses these challenges with descriptions of the photodetector assembly, sample acquisition and recording platform, and signal processing approach. End-to-end coded simulation and laboratory data analysis results are presented that validate the receiver conceptual design.
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Meera Srinivasan, Meera Srinivasan, Kevin Birnbaum, Kevin Birnbaum, Michael Cheng, Michael Cheng, Kevin Quirk, Kevin Quirk, } "A post-processing receiver for the lunar laser communications demonstration project", Proc. SPIE 8610, Free-Space Laser Communication and Atmospheric Propagation XXV, 86100Q (19 March 2013); doi: 10.1117/12.2005190; https://doi.org/10.1117/12.2005190
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