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太阳-天空分光辐射计的光机设计与应用

Optomechanical Design and Application of Solar-Skylight Spectroradiometer.

作者信息

Qi Zhaoyang, Li Jianyu, Xu Wenqing, Zhu Wenyue, Sun Fengying, Huang Yao, Xu Gang, Dai Congming

机构信息

Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.

University of Science and Technology of China, Hefei 230026, China.

出版信息

Sensors (Basel). 2021 May 28;21(11):3751. doi: 10.3390/s21113751.

DOI:10.3390/s21113751
PMID:34071400
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8198637/
Abstract

Using a solar radiometer is an effective approach for improving the remote sensing of solar irradiance distribution and atmospheric composition. Long-term development of a solar scanning radiometer enables frequent and reliable measurement of atmospheric parameters such as the water vapor column and aerosol optical properties. However, the discrete wavelength radiometer has encountered a bottleneck with respect to its insufficient spectral resolution and limited observation waveband, and it has been unable to satisfy the needs of refined and intelligent on-site experiments. This study proposes a solar-skylight spectroradiometer for obtaining visible and near-IR fine spectrum with two types of measurement: direct-sun irradiance and diffuse-sky radiance. The instrument adopts distributed control architecture composed of the ARM-Linux embedded platform and sensor networks. The detailed design of the measuring light-path, two-axis turntable, and master control system will be addressed in this study. To determine all coefficients needed to convert instrument outputs to physical quantities, integrating sphere and Langley extrapolation methods are introduced for diffuse-sky and direct-sun calibration, respectively. Finally, the agreement of experimental results between spectroradiometers and measuring benchmarks (DTF sun-photometer, microwave radiometer, and Combined Atmospheric Radiative Transfer simulation) verifies the feasibility of the spectroradiometer system, and the radiation information of feature wavelengths can be used to retrieve the characteristics of atmospheric optics.

摘要

使用太阳辐射计是改善太阳辐照度分布和大气成分遥感的有效方法。太阳扫描辐射计的长期发展使得能够频繁且可靠地测量诸如水汽柱和气溶胶光学特性等大气参数。然而，离散波长辐射计在光谱分辨率不足和观测波段有限方面遇到了瓶颈，无法满足精细化和智能化现场实验的需求。本研究提出一种太阳 - 天光光谱辐射计，通过直接太阳辐照度和漫射天空辐射两种测量方式获取可见和近红外精细光谱。该仪器采用由ARM - Linux嵌入式平台和传感器网络组成的分布式控制架构。本研究将阐述测量光路、两轴转台和主控制系统的详细设计。为了确定将仪器输出转换为物理量所需的所有系数，分别引入积分球和朗利外推法对漫射天空和直接太阳进行校准。最后，光谱辐射计与测量基准（DTF太阳光度计、微波辐射计和联合大气辐射传输模拟）之间的实验结果一致性验证了光谱辐射计系统的可行性，并且特征波长的辐射信息可用于反演大气光学特性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5978/8198637/ba012a0e223c/sensors-21-03751-g017.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5978/8198637/d4da93e43ede/sensors-21-03751-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5978/8198637/cc3050300653/sensors-21-03751-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5978/8198637/6fed57ded467/sensors-21-03751-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5978/8198637/3dec22164702/sensors-21-03751-g013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5978/8198637/9401439aac4c/sensors-21-03751-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5978/8198637/ba012a0e223c/sensors-21-03751-g017.jpg

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