Properties of an optical event timer for satellite laser ranging
The resolution and above all the stability of the geodetic reference frames is crucially important when global change, such as the sea level rise is observed. In this context systematic errors are still presenting a significant challenge to the measurement techniques of space geodesy. In order to ov...
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Veröffentlicht in: | Journal of geodesy 2024-08, Vol.98 (8), Article 74 |
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description | The resolution and above all the stability of the geodetic reference frames is crucially important when global change, such as the sea level rise is observed. In this context systematic errors are still presenting a significant challenge to the measurement techniques of space geodesy. In order to overcome this unfortunate situation for the satellite laser ranging technique, we have utilized the injection of a mode-locked laser to provide a stable low-noise link between the optical domain, where the measurements are carried out, and the microwave regime in which the station clock is defined. We obtained a considerably enhanced measurement delay stability by 10–20 ps over several days, albeit with some experimental challenges. The implementation of waveform scans required us to revisit the issue of target structure and intensity variation in satellite laser ranging. |
doi_str_mv | 10.1007/s00190-024-01876-9 |
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subjects | Earth and Environmental Science Earth Sciences Geodesy Geophysics/Geodesy Lasers Measurement techniques Original Article Satellites Sea level changes Sea level rise |
title | Properties of an optical event timer for satellite laser ranging |
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