摘要
研制了一台双通道(1.40±0.02μm,4.50±0.03μm)光谱辐射亮度计(以下简称辐射计),并进行了光谱辐亮度定标[1]。该辐射计主要由前置光学系统、精密机械调制器、双路单元红外探测器、锁相放大器、A/D转换器和单片机等组成。在短波红外波段,由InGaAs探测器和积分球光源传递国家光谱辐照度标准灯的标准[15],对辐射计进行标定[7];在中波红外波段,用大面积标准黑体辐射源和腔型黑体辐射源,标定辐射计的光谱辐亮度。由数据统计分析,得出辐射计的光谱辐亮度响应度的不确定度[12,14]。
A spectral radiation instrument （which was called radiometer for short below） with double channels （1.40 ± 0. 02μm, 4.50± 0.03μm） was developed, and its spectral radiance was calibrated. This radiometer mainly consisted of optical system, fine mechanical modulator, dual channel infrared detectors, lock-in amplifier, A/D conversion device and monolithic processor, etc. The radiometer was respectively calibrated in short-infrared band by national standard spectral irradiance lamp and in mid-infrared band by large area standard black body. Based on the statistical analysis of the data, the indeterminacy of the spectral radiance response of the radiometer was calculated.
出处
《光学技术》
EI
CAS
CSCD
北大核心
2006年第5期773-774,778,共3页
Optical Technique
关键词
红外辐射计
辐射定标
光谱辐亮度
响应度
infrared spectral radiometer
radiation calibration
radiance response
