LLCD operations using the Lunar Lasercom OGS Terminal
2014
The paper describes the operations of ESA’s Optical Ground Station (OGS) during the Lunar Laser Communications
Demonstration (LLCD) experiment, performed in October and November 2013 with NASA’s Lunar Atmospheric and
Dust Environmental Explorer (LADEE) spacecraft. First the transmitter and receiver designs at the OGS telescope are
described, which are geometrically separated to prevent cross-talk. Problems encountered and the lesson learned will be
explained. As it turned the chosen arrangement was not sufficiently stable in terms of alignment and the paper will
describe the solution found. A new industrial contract has been placed for improvement of the design of two solutions
will be presented, which will both be tested in a follow-up laser communication campaign, scheduled for end March
2014.
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