大气相干长度及其对激光外差接收机的影响

Atmospheric Coherence length and its effects on a laser heterodyne receiver

本文计算了水平光程和倾斜光程上的大气相于长度与外差接收效率。结果表明大气湍流对水平光程上的光学外差接收机的影响很大,而在斜程上湍流的影响要小得多。文中还给出了某些情况下的极限天顶角。最后简单讨论了激光外差接收机的最佳接收口径。

In this paper, atmospheric coherence length and heterodyne receiving effeciency for both horizontal and slant paths are calculated. The results indicate that the effects of atmospheric turbulence on the heterodyne receiver at a horizontal path are significant, but the effects at a slant path are much smaller. The limitting zenithal angles for some cases are also given. Lastly, the best receiving aperture of a lasez heterodyne rece：ver is discussed briefly.