自适应光学技术应用于激光测月中大气波前倾斜量的探测与计算  

The Detection and Computation of Atmospheric Tip-Tilt in Lunar Laser Ranging when Adaptive Optics Technology is Used

作　　者：郭锐[1] 熊耀恒[1] 

机构地区：[1]中国科学院国家天文台云南天文台,昆明650011

出　　处：《天文学报》2004年第4期413-421,共9页Acta Astronomica Sinica

基　　金：云南省自然科学基金(2002A0017R)资助

摘　　要：针对云南天文台1.2米望远镜在激光测月中回波光子数太少的问题,将大气湍流效应考虑到激光测月中,研究了互相关和绝对差分两种跟踪算法的原理,并编写了算法程序,利用太阳数据验证了程序的正确性.给出了根据所采集的月面感兴趣区域的图像数据,用不同方法在不同条件下处理所得的大气波前整体倾斜信号,比较了算法的优劣。Based on the fact that the returned photon numbers are few in Lunar Laser Ranging in Yunnan observatory 1.2 m telescope and the idea that effects of atmospheric turbulence should be considered, the two algorithms, absolute difference and cross correlation, are investigated. Programs are built and tested by sun data and are applied to lunar data. The atmospheric tip-tilt is computed in different conditions, the best algorithm and related conditions are selected.

关 键 词：光测 自适应光学技术 波前 激光 感兴趣区域 图像数据 跟踪算法 大气 回波光子数 云南天文台 

分 类 号：P228.5[天文地球—大地测量学与测量工程] TN92[天文地球—测绘科学与技术]