Sepp G
Appl Opt. 1975 Jul 1;14(7):1719-26. doi: 10.1364/AO.14.001719.
Geosynchronous satellites are often required to maintain accurately their orientation with respect to a selected point at the earth surface. Precise attitude determination of these satellites may be achieved using a laser beacon from ground to the satellite as a directional reference. Four simple implementations of this principle are analyzed, and the influence of the cloudy atmosphere on the laser beacon and, therefore, on the accuracy of the method is discussed. All-weather operation is not possible; for normal cloudiness conditions, however, two analyzed systems (pulsed Nd:YAG laser with photomultiplier and CO(2) laser with cryogenic detector) appear to be feasible.
地球同步卫星常常需要精确保持其相对于地球表面某一选定地点的方位。利用从地面射向卫星的激光信标作为定向参考，可以实现这些卫星精确的姿态测定。分析了该原理的四种简单实现方式，并讨论了多云大气对激光信标的影响，进而对该方法精度的影响。全天候运行是不可能的；然而，对于正常的云量条件，所分析的两个系统（带光电倍增管的脉冲Nd:YAG激光和带低温探测器的CO(2)激光）似乎是可行的。
