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Optical Communications Ground Receivers (view source)
Revision as of 02:04, 19 April 2016
, 02:04, 19 April 2016no edit summary
A link was established with the LLGT on 55 passes averaging 16 minutes and up to 29 minutes long. Link acquisition is acquired in a multi-step process. First, a wide 45 μrad diameter beam is pointed at the known position of the LLST. Once a signal has been detected, the LLST points a downlink beam towards the LLGT and the the uplink comm wavelength is coupled to the LLST receiver fiber to establish uplink data transfer. The transmitting telescopes can uplink at 20 Mbps.
A link was established with the LLGT on 55 passes averaging 16 minutes and up to 29 minutes long. Link acquisition is acquired in a multi-step process. First, a wide 45 μrad diameter beam is pointed at the known position of the LLST. Once a signal has been detected, the LLST points a downlink beam towards the LLGT and the the uplink comm wavelength is coupled to the LLST receiver fiber to establish uplink data transfer. The transmitting telescopes can uplink at 20 Mbps.
=Lunar Lasercom OCTL Terminal (LLOT) — Wrightwood, CA (JPL)=
=Lunar Lasercom OCTL Terminal=
The Lunar Lasercom OCTL Terminal (LLOT) is an auxiliary receive-only ground station for the LLCD. It is located in Wrightwood, CA, and is operated by JPL. Downlink to the LLOT is up to 39 Mbps. A link is established in a similar way to the LLGT, but is ultimately receive-only. The laser beacon pointed at the LLST is made by 6 separate lasers spaced ~310 mm apart to achieve a hexagonal beam.
The LLOT is an auxiliary receive-only ground station for the LLCD. Downlink to the LLOT is up to 39 Mbps. A link is established in a similar way to the LLGT, but is ultimately receive-only. The laser beacon pointed at the LLST is made by 6 separate lasers spaced ~310 mm apart to achieve a hexagonal beam.
==Link Acquisition Process==
==Link Acquisition Process==