基于紫外转动拉曼激光雷达大气折射指数的反演分析  

RETRIEVAL AND ANALYSIS OF ATMOSPHERIC REFRACTIVE INDEX USING A UV ROTATIONAL RAMAN LIDAR OBSERVATION

作　　者：刘玉丽 LIU Yuli(Department of Basic Course,Army Infantry Academy,Nanchang,Jiangxi 330103)

机构地区：[1]陆军步兵学院基础部,江西南昌330103

出　　处：《物理与工程》2025年第1期248-252,共5页Physics and Engineering

基　　金：陆军步兵学院自主立项课题资助。

摘　　要：大气折射指数是影响光电探测领域测量精度的重要因素。本研究利用紫外转动拉曼激光雷达测量的大气温度廓线反演大气折射指数廓线,结果表明紫外转动拉曼激光雷达反演的折射指数垂直廓线与探空仪反演结果较为吻合,10km以内两者相对误差为2.4%。在标准大气状况下,温度升高1K折射指数变化-1.03;压强升高1kPa时折射指数变化2.98;水汽压强增大1kPa时,大气折射指数仅变化-0.41,相对变化为-0.14%。本研究的分析结果为大气折射指数选择合适的反演公式提供了理论依据。The atmospheric refractive index is an important factor affecting the measurement accuracy in the field of photoelectric detection.By using the atmospheric temperature profile measured by the ultraviolet rotational Raman lidar to invert the atmospheric refractive index profile,the results show that the vertical profile of the refractive index inverted by the ultraviolet rotational Raman lidar is in good agreement with the results inverted by the radiosonde,with a relative error of 2.4%within 10km.Under the standard atmospheric condition,the refractive index changes by-1.03 when the temperature increases by 1 K;the refractive index changes by 2.98 when the pressure increases by 1kPa;the refractive index of the atmosphere changes only-0.41,with a relative change of-0.14%when the water vapor pressure increases by 1kPa.The analysis results of this paper provide a theoretical basis for selecting the appropriate inversion formula for the atmospheric refractive index.

关 键 词：激光雷达 大气折射 大气温度 大气压强 

分 类 号：TN958[电子电信—信号与信息处理] P412.25[电子电信—信息与通信工程]