简易双波段光谱辐射计的设计及标定方法  

Analyzing the method to demarcate a dual-band soectral radiometer

作　　者：白翔[1] 王建军[1] 高昕[1] 

机构地区：[1]北京跟踪与通信技术研究所,北京100094

出　　处：《红外与激光工程》2006年第z2期145-150,共6页Infrared and Laser Engineering

摘　　要：设计了一台简易双波段(1.315±0.020μm,3.6～4.2μm)光谱辐射计(以下简称辐射计)来替代全辐射计,并对该台辐射计的光谱辐亮度标定方法进行了探讨。该辐射计包括前置光学系统、精密机械调制器、准直镜、平面摆动反射镜、双路单元探测器(InGaAs 探测器和 PbSe 探测器)和锁相放大器以及 A/D 和单片机等。标定方法:在1.315μm波段,用标准辐射计和积分球光源,对辐射计进行标定;在3.6～4.2μm波段,用大面积标准黑体辐射源、腔型黑体辐射源,标定辐射计的光谱辐亮度。通过实验数据统计的方法建立探测器数码输出 DN 值与对应的辐射计的光谱辐射亮度 B 的关系,得到辐射计的光谱辐射亮度响应度 R。Using a dual-band spectral radiometer to replace the total radiation radiometer,and analyzing the method to demarcate the spectral radiant brightness of this radiometer.The design of this radiometer includes the prime optical system,precise lathe modulator,collimating device,plane swing reflector,dual detector (InGaAs detector and PbSe detector),lock-in amplifier,and A/D,microchip.The method of demarcate:at 1.315μm, demarcating this radiometer by comparison radiometer and integrating sphere.In the 3.6～4.2μm,using big area standard blackbody radiometer,cavity blackbody radiometer to demarcate this radiometer.Set up the relationship between the DN data output of detector and the spectral radiant brightness of this radiometer B,receive the responsiveness R.

关 键 词：辐射计 辐射定标 光谱辐亮度 响应度 

分 类 号：TH744[机械工程—光学工程]