光学
天顶
折反射系统
校准
光场
物理
全内反射
计量系统
反射(计算机编程)
观测误差
准确度和精密度
辐射
积分球
计算机科学
镜头(地质)
统计
量子力学
程序设计语言
数学
天文
作者
Yangyang Zou,Liu Zhang,Jian Zhang,Jia Cui
出处
期刊:Applied Optics
[The Optical Society]
日期:2022-03-14
卷期号:61 (9): 2275-2275
被引量:3
摘要
A synchronous multi-angle scattered light field measurement system is constructed in this study to overcome issues with current systems in the field of multi-angle remote sensing. A mathematical model of the scattered light field measurement was established. An off-axis catadioptric optical system was designed to satisfy hemispheric spatial scattered light field measurements in a zenith angle range of 68°. The off-axis calibration model was established, and the spatial relationship was calibrated. The measurement accuracy was calibrated via an integrating sphere light source, and the maximum measurement relative error was -3.71%. The scattered light field of the reference diffuse reflective target plate Labsphere Permaflect-50 and 304 stainless steel was simulated under an incident light irradiation range within the zenith angle of -23.5∘ to +23.5∘, and synchronous measurement of the multi-angle scattered light field of the sample was realized. The measurement system could provide technical support for building the complex model of multi-angle reflection/radiation from the earth's surface, multi-angle sensor radiation calibration, and improvement of the physical parameter inversion accuracy of observation targets.
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