To the Moon...and Back! Using Lunar Laser Ranging to Obtain A Better Understanding of the Universe

前往月球……然后返回！

• 批准号: 0707466
• 负责人: Peter Shelus
• 金额: --
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-06-01 至 2011-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0707466&HistoricalAwards=false
• 关键词: Moon...and; Back; Using; Lunar; Laser

AST-0707466ShelusLunar Laser Ranging (LLR) experiments accurately measure the round-trip travel time for a laser pulse from an observing station on Earth bouncing off a retroreflector array on the surface of the Moon. Such observations have been made at the McDonald Laser Ranging Station (MLRS) for almost 40 years. These data contribute to varied, multi-disciplinary and inter-disciplinary results in solid Earth sciences, geodesy and geodynamics, solar system ephemerides, terrestrial and celestial reference frames, lunar physics, general relativity and gravitational physics. LLR expands our understanding of the precession of the Earth?s spin axis, the lunar nutation, lunar and solar solid body tides, lunar tidal deceleration, lunar physical and free librations, and energy dissipation in the lunar interior. The present support allows the MLRS LLR experiment to run through at least late 2009. These LLR data will provide better results, due to the improvement of observing equipment and data analysis with time, expansion of the database, and learning to apply more, and cleverer, observation strategies.The LLR project shares the MLRS with artificial satellite laser ranging studies, and cooperates with the International Laser Ranging Service. It is involved with communication, cooperation, and coordination of both observations and data analysis efforts around the country and across the world. The MLRS has many visitors and provides regular lectures and tours.

AST-0707466ShelusLunar Laser Ranging （LLR）实验精确测量了来自地球观测站的激光脉冲从月球表面的后向反射器阵列反弹的往返旅行时间。麦克唐纳激光测距站（MLRS）已经进行了近40年的观测。这些数据有助于在固体地球科学、大地测量学和地球动力学、太阳系星历表、地球和天体参照系、月球物理、广义相对论和引力物理等领域取得各种多学科和跨学科的成果。LLR扩展了我们对地球岁差的理解？S自旋轴、月球章动、月球和太阳固体潮汐、月球潮汐减速、月球物理和自由振动以及月球内部的能量耗散。目前的支持允许MLRS LLR实验至少运行到2009年底。随着时间的推移，观测设备和数据分析的改进，数据库的扩展，以及学会应用更多、更智能的观测策略，这些LLR数据将提供更好的结果。LLR项目与人造卫星激光测距研究共享MLRS，并与国际激光测距服务合作。它涉及全国和世界各地的观测和数据分析工作的沟通、合作和协调。MLRS有很多游客，并定期提供讲座和参观。