Time Transfer by Laser Link: The T2L2 experiment on Jason 2

Safety of Ground-based Space Laser Application

“…One of the emerging areas of interest within the ILRS is the precision optical time transfer such as the T2L2 project (Guillemot et al, 2006;Samain et al, 2009). The major objective of the IAG is advancement of geodesy, which becomes mostly visible by efforts related to the precise representation of the figure, the gravity field, the rate of rotation and the orientation of the rotational axis of the Earth, as well as the temporal variation of these quantities.…”

Odyssey: a solar system mission

“…The laser option, called TIPO (Télémétrie Inter Planétaire Optique [60]), is a one-way laser tracking project derived from satellite and lunar laser ranging (SLR/LLR) and optical time transfer T2L2 [61]. The TIPO principle is based on the emission of laser pulses from an Earth based station towards the spacecraft.…”

Time Transfer by Laser Link – The T2l2 Experiment on Jason-2 and Further Experiments

“…A ground-to-ground time transfer experiment has been led at OCA in 2004 to assess the whole error budget. 14,15 A retro-reflector was placed on a near mountain (2.5 km), whereas the space segment was installed in front of the telescope: The laser beam was thus bent two times, travelling from the ground equipment (i.e. the laser station) to the space segment, and the same way back.…”