Improving the radiance retrieval accuracy in limb sounding by utilizing a similarity model correcting the internal thermal radiation for an infrared radiometer
文献类型：期刊论文
| 作者 | Ceng DD(曾丹丹)2 ; Chen S(陈涉)2; Chen H(陈豪)2; Yan B(闫浡)1,2; Li SH(李帅辉)1,2
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| 刊名 | OPTICS LETTERS
 |
| 出版日期 | 2024-12-15 |
| 卷号 | 49期号:24页码:7142-7145 |
| ISSN号 | 0146-9592 |
| DOI | 10.1364/OL.537777 |
| 通讯作者 | Li, Shuaihui(lee@imech.ac.cn) |
| 英文摘要 | For commercially available infrared radiometers with a small volume and a light weight and without an independent cooling system for the optical structure, thermal sensitivity is a key constraint for their application to high-precision limb observations. In this research, the response law of a medium wave (3.7-4.8 mu m) infrared radiometer with different thermal states is investigated, and emphasis is placed on the background gray variability caused by different thermal states. We construct a similarity model to describe the response difference. Utilizing the very small radiance of the upper atmosphere and the similarity model, we can correct the deviation caused by the thermal fluctuation of the sounder with high accuracy. The method of improving the retrieval accuracy is validated by simulating the limb-sounding scenarios with ground experiments. When the target radiance is 2.27 x 10-7 Wcm-2sr-1, a temperature difference of 2.5 degrees C causes a 918% deviation in the retrieved radiance, which can be reduced to 23% after correction with the similarity model proposed in this paper. This method can facilitate the application of portable radiometers in the field of high-precision detection. (c) 2024 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved. |
| 分类号 | 二类 |
| WOS关键词 | SURFACE TEMPERATURE ; CALIBRATION ; SEA |
| WOS研究方向 | Optics |
| 语种 | 英语 |
| WOS记录号 | WOS:001380259300005 |
| 其他责任者 | Li, Shuaihui |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/97991]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Ceng DD,Chen S,Chen H,et al. Improving the radiance retrieval accuracy in limb sounding by utilizing a similarity model correcting the internal thermal radiation for an infrared radiometer[J]. OPTICS LETTERS,2024,49(24):7142-7145. |
| APA | 曾丹丹,陈涉,陈豪,闫浡,&李帅辉.(2024).Improving the radiance retrieval accuracy in limb sounding by utilizing a similarity model correcting the internal thermal radiation for an infrared radiometer.OPTICS LETTERS,49(24),7142-7145. |
| MLA | 曾丹丹,et al."Improving the radiance retrieval accuracy in limb sounding by utilizing a similarity model correcting the internal thermal radiation for an infrared radiometer".OPTICS LETTERS 49.24(2024):7142-7145. |
入库方式： OAI收割
来源：力学研究所
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