光学技术, 2012, 38 (2): 141, 网络出版: 2012-04-20
红外多光谱扫描仪模拟空间环境辐射定标光学系统精度分析
Precision analysis of radiometric calibration optical system with infrared multi-spectral scanner in simulated space environment
辐射定标 光学系统 精度分析 积分球 低温黑体 radiometric calibration optical system precision analysis integrating sphere low-temperature blackbody
摘要
从国际不确定度工作组制定的《测量不确定度表示指南》入手，建立辐射定标光学系统的精度分析模型，确定影响定标精度的各误差源和不确定度分量，采用仿真分析、统计计算、查阅手册，结合试验数据等多种方法计算各自数值，得到系统相对常差和合成相对标准不确定度。结果表明: 黑体辐射源定标系统常差为0.012，不确定度为1.07％；积分球系统常差为0.024，不确定度为2.51％，定标系统性能良好。通过研究，建立了一种分析模拟空间环境下光学试验精度的指导性方法。
Abstract
The method of precision analysis is combined with five following steps, learning the guide of precision analysis, establishing a calculation model of the target system, identifying the error and uncertainty elements in the system, calculating each element via simulation, statistics and user’s manual, determining combined standard uncertainty. The analysis results demonstrate that the error of calibration optical system with blackbody source is 0.012, uncertainty is 1.07% and the number of the integrating sphere source is 0.024 and 2.51%, which mean the radiometric calibration system has good performance. The method has been used in similar tests as a guideline.
许杰, 杨林华. 红外多光谱扫描仪模拟空间环境辐射定标光学系统精度分析[J]. 光学技术, 2012, 38(2): 141. XU Jie, YANG Linhua. Precision analysis of radiometric calibration optical system with infrared multi-spectral scanner in simulated space environment[J]. Optical Technique, 2012, 38(2): 141.
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