Auxiliary functions of the LISA laser link: Ranging, clock noise transfer and data communication
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11 pages
Published in:
- Class.Quant.Grav. 28 (2011) 094008
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Experiments:
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Abstract: (IOP)
The Laser Interferometer Space Antenna (LISA) is required to reduce two important noise sources by post-processing on the ground using time-delay interferometry (TDI): phase noise of the on-board reference clocks and laser frequency noise. To achie ve the desired suppression, the TDI algorithm needs measurements of the differential clock noise between any two spacecraft and inter-spacecraft ranging measurements with at least 1 m accuracy, which is beyond the precision of ground-based measurements fo r deep space missions. Therefore, we need on-board measurements by transmitting clock noise and ranging information between the spacecraft as auxiliary functions of the laser link. This paper reports our current experimental results in clock noise transfe r and ranging for noise subtraction via post-processing as well as additional data transfer.- 42.60.Fc
- 78.20.Jq
- 95.55.Ym
- 07.60.Ly
- 04.80.Nn
- 42.60.Mi
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