风云二号辐射计的红外杂散光抑制研究  

Research on Suppression of Stray Infrared Light in FY-2 Radiometer

作　　者：沈易[1,2] 李欣耀 陈福春[1,2] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083 [2]中国科学院红外探测与成像技术重点试验室,上海200083

出　　处：《红外》2013年第8期1-5,共5页Infrared

摘　　要：风云二号卫星云图显示扫描辐射计存在红外杂散辐射,因此需要对光学系统作进一步改进以减少杂散辐射。利用TracePro软件对该系统的红外杂散辐射的形成机理和入侵途径进行了仿真和分析。基于分析结果对该光学系统的红外杂散辐射提出了几项有效抑制措施,并通过计算系统的点源透过率(Point Source Transmittance,PST)函数对这些改进措施进行了评价。Because the nephograms of FY-2 meterological satellite show that there exists stray infrared light in the radiometer,it is necessary to further modify the optical system used in the radiometer so as to suppress the stray infrared light.The generation mechanism and path of the stray infrared light in the optical system are simulated and analyzed by the TracePro software.On the basis of the analysis result, several measures which can be used to suppress the stray infrared Ught of the optical system effectively are proposed.Finally,these measures are evaluated by calculating the Point Source Transmission（PST） function of the optical system..

关 键 词：红外杂散光 杂散光抑制 点源透过率 仿真分析 

分 类 号：TN21[电子电信—物理电子学]