Study of Atmospheric Effects on a 532nm Laser and Its Applications in the Laser Ranging Based on Diffuse Reflection

In tests of laser ranging based on diffuse reflection of ground targets,the selection of distances to targets must take into account influences from the atmosphere.This is because only tests based on considerations of atmospheric influences can adequately reflect the reality encountered in future applications of laser ranging based on diffuse reflection.Since the purpose is to detect low-orbit space debris,these tests use ground targets to determine the effective ranges of laser ranging for a given target cross section at a given laser power.Among the relevant settings for such tests are target locations,which need to be at different heights along the direction of laser-beam propagation to represent different levels of laser-beam transmission within the amosphere.This paper describes the effects of atmospheric turbulence and atmospheric attenuation on laser transmission by focusing on the generating mechanisms of these effects.We list theoretical calculations at different elevation angles and different laser transmission distances,and yield the relations of these effects to the levels of transmission.Finally we determine the practical parameters for a test of laser ranging based on diffuse reflection.