Height distribution profiles and its application of atmosphere refractive index

TLDR: In this article, the authors analyzed the influence of factors such as pressure, temperature and wavelength on the atmospheric refractive index and provided reference for correction of the refractive effects on beams propagation.

Abstract: When beam wave propagates through the non-homogenous atmosphere,the beams are refracted,optical path is increased and the track is curved,hence the measuring error is caused by angular position and distance of tested target.Some main experimental datum of the atmosphere parameters were obtained in desert of Xinjiang.According to the measuring data,the atmospheric refractive index characteristics at various heights were summarized,and the measuring profiles of the atmospheric refractive index were given.Exponential distributing mode and three-parameters-γ distributing mode of the atmospheric refractive index were given by mode fitting.Influence of factors such as pressure,temperature and wavelength on the atmospheric refractive index were analyzed.Based on the modeling profiles of the atmospheric refractive index,the effect of atmosphere refractive of optical propogation was analyzed in theory,the refractive angles and dispersion angles were calculated as beams propagated through the atmosphere at different zenith on typical wavelength.Calculation results provide reference for correction of the refractive effects on beams propagation.