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Time Referencing: atomic clocks, laser links and applications

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Time Referencing: atomic clocks, laser links and applications

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  • Author: Leo Hollberg, Nathan R. Newbury, Ian Coddington, Jean-Daniel Deschenes, Laura Sinclair, Kurt Gibble, Penina Axelrad, Michael Taylor, and Sascha Schediwy
A Space-Time Reference (STR) frame that has exceptional performance could be realized using an advanced atomic clock in a well-defined orbit that is periodically connected to the highestperformance atomic clocks on the ground using two-way Doppler-canceling laser links. The two-way laser links would also provide precise range information and thus precise orbit determination (POD).i With a well-defined orbit and a synchronized clock, the satellite could serve as a high-accuracy reference providing accurate Time1 worldwide, an exceptional reference frame for geodesy, and independent high-accuracy measurements of Global Navigation Satellite Systems (GNSS) clocks.

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