摘要
从辐射传输理论出发,利用离散纵标法软件包(DISORT),计算了典型大气条件下0.55μm波长的目标背景对比度,分析了观察者的天顶角和方位角、水平能见度、垂直高度、太阳的天顶角和方位角以及气溶胶单次散射反照率对目标背景对比度的影响。结果表明:目标背景对比度随着观察者天顶角余弦的增加而增加;随着太阳天顶角余弦的增加而减小;随着观察者和太阳方位角差的增加而增加;随着高度的增加而减小;随着水平能见度的增加而增加;随着单次散射反照率的增加而减小。
A software-package, DISORT (discrete ordinate method), is used to compute the object-background contrast at 0.55 μm wavelength under the standard atmosphere. It is also analyzed that object-background contrast is affected by many factors, including the horizontal visibility, altitude, the visual zenith angle, and solar zenith angle, azimuthal angles difference between the observer and the sun, and the aerosol single scattering albedo. As the result, the contrast increases with the increase of the observer zenith angle and the azimuthal angles difference, while it increases with the decrease of the solar zenith angle, the altitude and the single scattering albedo.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2004年第7期848-852,共5页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
