强激光与粒子束2012，Vol.24Issue(12)：2778-2782,5.DOI:10.3788/HPLPB20122412.2778
红外大气折射率剖面分布模式
Refractivity profile distribution model for infrared waves
摘要
Abstract
Atmospheric refractivity significantly influences optoelectronic measuring accuracy and laser propagation, so an accurate knowledge of the refractivity profile is important. In this paper, calculations of the refractive index using atmospheric parameters for the near and middle infrared are carried out, and then the refractivity profiles of the Gobi zone in Xinjiang are obtained from the sounding data for the latest few years. The statistical distributions of the refractive index in every season for wavelengths of 4 μm and 1. 32 μm are discussed in detail, and the three-parameter exponential mode is proposed to describe the mean refractivity profile. A three-parameter exponential profile for wavelengths of 4 μm and 1.32 μm in every season is given by nonlinear fitting. The statistical refractive profile is used to correct the refractive error of the data obtained from the optoelectronic e-quipments in real-time. This correction result is compared with the post correction result using the measured profile, with the difference of them less than 5".关键词
大气光学/光电测量/折射误差修正/折射率剖面/三参数指数模式Key words
atmospheric optics/ optoelectronic measurement/ refractive error correction/ refractivity profile/ three-parameter exponential mode分类
天文与地球科学引用本文复制引用
孙正,宁辉,谢永杰,曹鑫..红外大气折射率剖面分布模式[J].强激光与粒子束,2012,24(12):2778-2782,5.基金项目
国家高技术发展计划项目 （）
