Lunar laser ranging in infrared at the Grasse laser station
Lunar laser ranging in infrared at the Grasse laser station
复制标题
格拉斯激光站的红外月球激光测距
DOI：
--
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Vishnu Viswanathan
中科院分区：
文献类型：
--
作者：
C. Courde;J. Torre;E. Samain;G. Martinot‐Lagarde;M. Aimar;D. Albanese;P. Exertier;A. Fienga;H. Mariey;G. Métris;H. Viot;Vishnu Viswanathan
多年来，使用绿色波长的月球激光测距（LLR）观测遭受了时间和空间上的不均匀性问题。本文报告了在格拉斯LLR站实施一种新的红外探测，并介绍了红外遥测如何改善这种情况。我们的第一个结果表明，红外探测使我们能够增加观测的密度，并允许在新月和满月期间进行测量。链路预算的改善导致每个月球后向反射器上的均匀遥测测量。最后，在月球车2号阵列上获得了一个令人惊讶的结果，它在红外激光链路下获得了与月球车1号相同的效率，尽管这两个目标在绿色激光链路下表现出6的效率差。
For many years, lunar laser ranging (LLR) observations using a green wavelength have suffered an inhomogeneity problem both temporally and spatially. This paper reports on the implementation of a new infrared detection at the Grasse LLR station and describes how infrared telemetry improves this situation. Our first results show that infrared detection permits us to densify the observations and allows measurements during the new and the full Moon periods. The link budget improvement leads to homogeneous telemetric measurements on each lunar retro-reflector. Finally, a surprising result is obtained on the Lunokhod 2 array which attains the same efficiency as Lunokhod 1 with an infrared laser link, although those two targets exhibit a differential efficiency of six with a green laser link.