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100 kHz satellite laser ranging demonstration at Matera Laser Ranging Observatory
Journal of Geodesy ( IF 4.4 ) Pub Date : 2021-02-05 , DOI: 10.1007/s00190-020-01469-2
Daniele Dequal , Costantino Agnesi , David Sarrocco , Luca Calderaro , Luigi Santamaria Amato , Mario Siciliani de Cumis , Giuseppe Vallone , Paolo Villoresi , Vincenza Luceri , Giuseppe Bianco

The new challenges related to the monitoring of Earth’s shape and motion have led the global geodetic observing system to set more stringent requirements on the precision and stability of the terrestrial reference frame (TRF). The achievement of this ambitious goal depends on the improvement of space geodesy techniques, satellite laser ranging (SLR) in particular, being the main instrument for TRF realization. In this work, we study the potential of very high repetition rate SLR by performing a data acquisition campaign with an Ekspla “Atlantic 60” 100 kHz repetition rate laser at the Matera Laser Ranging Observatory (MLRO). This system constitutes an increase of two orders of magnitude in repetition rate with respect to the current SLR stations, while maintaining a good single-shot timing performance. The system has been active for 4 consecutive nights, consistently tracking several low Earth orbit satellites as well as LAGEOS 1 and 2. The results have shown a single-shot time jitter close to other stations, but with unprecedented statistics for \(\approx 10\) ps single-shot precision. The analysis of the residuals of LAGEOS satellites allowed us to identify multiple peaks, due to the retroflection from different corner cubes. This opens up the possibility of attitude determination of retroreflector arrays, as well as a new method for spin rate measurement.



中文翻译:

Matera激光测距天文台演示100 kHz卫星激光测距

与监测地球形状和运动有关的新挑战已导致全球大地观测系统对地面参考系(TRF)的精度和稳定性提出了更严格的要求。这一宏伟目标的实现取决于太空大地测量技术的改进,尤其是卫星激光测距(SLR),是实现TRF的主要工具。在这项工作中,我们通过在Matera激光测距天文台(MLRO)用Ekspla“ Atlantic 60” 100 kHz重复频率激光器进行数据采集活动来研究极高重复频率SLR的潜力。该系统相对于当前的SLR电台,其重复率增加了两个数量级,同时保持了良好的单发定时性能。\(\大约10 \) ps单次射击精度。对LAGEOS卫星残差的分析使我们能够确定多个峰,这是由于来自不同角corner的逆反射所致。这开辟了后向反射器阵列姿态确定的可能性,以及旋转速率测量的新方法。

更新日期:2021-02-05
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