辐射特性测量大气传输修正研究:大气辐射传输模式和关键大气参数分析

Research of atmospheric transfer correction in radiance measurement: atmospheric radiative transfer model and the analysis of key atmospheric parameters

工作于大气中的光电测量(或遥感)设备接收的目标辐射信号受大气衰减和大气背景辐射影响。大气传输修正是目标辐射特性测量的一个重要环节。介绍了目前国际上实用的大气辐射传输计算模式及影响大气传输的重要大气光学参数的探测方法。对影响红外波段大气传输的重要大气光学参数作了分析,论证了辐射测量大气传输修正系统必须测量的大气参数。

The signal of a target measured by electro-optics detector is attenuated by the atmosphere and affected by atmospheric background radiance. Atmospheric transfer correction is important to the measurement of target′s radiation characteristic. The commonly-used atmospheric radiative transfer models and the detecting methods of important atmospheric optics parameters affecting atmospheric radiative transfer were introduced. The atmospheric parameters affecting infrared radiative transfer were analyzed, the analyzed results indict those key atmospheric optics parameters must be measured in the atmospheric transfer correction system.