激光遥感斜程能见度探测技术研究进展(特邀)  

Research Progress of Laser Remote Sensing in Slant Visibility Measurements(Invited)

作　　者：王玉峰[1] 华灯鑫[1] Wang Yufeng;Hua Dengxin(Laser Radar Center of Remote Sensing of Atmosphere,School of Mechanical and Precision Instrument Engineering,Xi'an University of Technology,Xi'an 710048,Shaanxi,China)

机构地区：[1]西安理工大学机械与精密仪器工程学院激光雷达大气遥感研究中心,陕西西安710048

出　　处：《光学学报》2024年第6期1-11,共11页Acta Optica Sinica

基　　金：国家自然科学基金(U1733202,41627807);陕西省创新能力支撑计划项目(2020-TD014)。

摘　　要：以斜程能见度精确探测为目标,综述了激光遥感在斜程能见度测量中的主要技术及其研究进展,分析了现有探测技术在斜程能见度测量中的不足与局限性,重点介绍了一种新型的激光雷达结合辐射传输模式的斜程能见度测量方法,剖析了基于拉曼-米散射激光雷达的气溶胶精细探测技术、基于辐射传输模式的大气散射辐射亮度解析方法以及大气散射辐射亮度校正的斜程能见度测量技术与应用案例,突破了当前白天斜程能见度测不准的技术瓶颈。最后,展望了激光遥感技术在全球斜程能见度测量中的应用潜力。Significance Visibility is a basic meteorological parameter and is regarded as a weather index to understand atmospheric stability and vertical structure.Unlike horizontal visibility,slant visibility is a crucial parameter that pilots are actually concerned about,and it directly determines the safety of aircraft take-off and landing in the aviation field.In addition,slant visibility is an important parameter for space target recognition and plays an important role in the field of weather analysis,sea,land,and air traffic,astronomical observation,sea fog warning,and so on.Therefore,slant visibility,as a highly concerned atmospheric optical and meteorological parameter in recent years,has shown important scientific research significance and application value in atmospheric research,civil aviation,space exploration aerospace,military,and other fields.Progress Atmospheric visibility can be measured by visual methods or visibility instruments.Both the forward-scatteringtype and the transmission-type visibility meters can measure horizontal visibility.However,they are unable to provide information on slant visibility.With the development of lidar technology,few lidar visibility meters have appeared in recent years,with singlewavelength Mie-scattering lidar as the core,and two types of inversion algorithms have been developed.One is the slant visibility inversion method based on Koschmieder s visibility law,in which the measurement of slant visibility only depends on the inversion of atmospheric aerosol extinction coefficients;the other is the inversion method based on optical thickness,in which the atmospheric optical thickness obtained by multi-elevation angle lidar detection is used to estimate the slant visibility.However,the main limitation lies in the neglect of the influence of scattered radiance and the uniform path assumption.As a result,these inversion methods have certain inversion defects.In addition,previous research has begun to pay attention to the atmospheric scattered radiance.However,most of them focus

关 键 词：大气光学 激光遥感 斜程能见度 辐射传输模式 散射辐射亮度 

分 类 号：TN958.98[电子电信—信号与信息处理]