摘要
从辐射传输方程出发，严格地分析了以往工作中被忽略的大气层中悬浮微粒散射对热红外辐射能量传输的影响，特别研究了对能量平衡的贡献和对传感器信噪比的影响，对以遥感器高度和能见度作为参量的仿真计算结果说明，与传统的不考虑大气中悬浮微粒的散射情况相比差1～2个数量级。这说明，悬浮微粒的散射不仅对红外辐射有消光作用，而且是研究热红外遥感系统中新的辐射通量出现的重要因素。
The effects of scattering caused by atmospheric aerosol are become more and more important. So the effects are studied by using radiation transfer equation in detail. The influences on radiant flux transfer, especially the energy balance and total signal-to-noise ratio of remote sensor induced by atmospheric aerosol, which are ignored in the past studies, are rigorously analyzed. The simulation results for parameters of altitude of remote sensor and visibility show that the scattering of the thermal infrared radiation by atmospheric aerosol differ in 1 - 2 magnitude order of that with aerosol ignored. This is due to the fact that the scattering is not only component of the infrared radiation extinction, but also an important factor determining the emergence of new types radiant fluxes in the thermal infrared remote sensing of the earth.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2006年第12期1766-1771,共6页
Acta Optica Sinica
基金
航天创新基金
航空基础科学基金(05F51073)资助课题
关键词
热红外遥感
悬浮粒子散射效应
辐射传输理论
对地遥感
thermal infrared remote sensing
effects of aerosol scattering
radiation transfer theory
remote sensing of the earth
