量子电子学报 ›› 2023, Vol. 40 ›› Issue (6): 888-898.doi: 10.3969/j.issn.1007-5461.2023.06.009

• 激光技术与器件 • 上一篇    下一篇

高空光谱辐亮度仪的光机设计与实验分析

康祝海 1,2, 李 新 1*, 刘恩超 1, 张 权 1, 郑小兵 1   

  1. ( 1 中国科学院合肥物质科学研究院安徽光学精密机械研究所通用光学定标与表征技术重点实验室, 安徽 合肥 230031; 2 中国科学技术大学, 安徽 合肥 230026 )
  • 收稿日期:2022-01-07 修回日期:2022-03-08 出版日期:2023-11-28 发布日期:2023-11-28
  • 通讯作者: E-mail: xli@aiofm.ac.cn E-mail:E-mail: xli@aiofm.ac.cn
  • 作者简介:康祝海 ( 1995 - ), 云南昭通人, 研究生, 主要从事光学精密仪器设计方面的研究。 E-mail: kzh@mail.ustc.edu.cn
  • 基金资助:
    国家重点研发计划 (2018YFB0504600, 2018YFB0504604), 国家自然科学基金 (42105139), 中国科学院合肥物质科学研究院院长基金 (YZJJ2020QN4)

Opto-mechanical design and experimental analysis of high-altitude spectral radiance meter

KANG Zhuhai 1,2 , LI Xin 1* , LIU Enchao 1 , ZHANG Quan 1 , ZHENG Xiaobing 1   

  1. ( 1 Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 2 University of Science and Technology of China, Hefei 230026, China )
  • Received:2022-01-07 Revised:2022-03-08 Published:2023-11-28 Online:2023-11-28

摘要: 针对现阶段星载遥感器高精度定标的需求, 研制了高空光谱辐亮度仪, 可应用于辐亮度法替代定标, 提升定 标精度。该仪器光谱范围为400~2500 nm, 搭载在高空气球平台上能够在18~35 km高空中直接对地测量反射辐 亮度。该仪器光机系统主要由前置一体式镜筒、色散模块和光机温控模块组成。为了验证该高空光谱辐亮度仪的可 靠性与测量数据的准确性, 在青海大柴旦开展了该仪器与美国 Spectra Vista 公司SVC光谱仪的比对实验以及高空飞 行实验。实验结果表明: 在地面测量中两台仪器所测辐亮度具有良好的一致性, 二者偏差普遍在± 1%以内, 最大偏 差在± 3.5%以内; 在高空飞行实验中, 研制的辐亮度仪在25 km高空中平稳飞行6 h, 获得了高空测量辐亮度, 各模块 与探测器温度均稳定保持在设定值。实验结果验证了整个仪器的可靠性, 表明所研制的辐亮度仪满足对卫星遥感器 的高精度定标需求, 适合于高空高精度测量。

关键词: 遥感, 光机设计, 辐亮度基法, 高空

Abstract: In order to meet the current demand for high-precision calibration of satellite-borne remote sensors, a high-altitude spectral radiance meter has been developed, which can be applied to the radiance method instead of the traditional site calibration method to improve calibration accuracy. The instrument has a spectral range from 400 nm to 2500 nm, and can be mounted on a high-altitude balloon platform to measure the reflected radiance to the ground directly at an altitude from 18 km to 35 km. The opticalmechanical system of the instrument is mainly composed of a front integrated lens barrel, a dispersion module and the optical-mechanical temperature control module. In order to verify the reliability of the high-altitude spectral radiance meter and the accuracy of the measured data, a comparison experiment between this instrument and the SVC spectrometer of Spectra Vista (USA), as well as a high-altitude flight experiment, was carried out in Dachaidan, Qinghai. The experimental results show that there is good consistency in the radiance measured by the two instruments, with a deviation of the two instruments generally within ±1% and a maximum deviation within ±3.5%. In the high-altitude flight experiment, the instrument can keep stable at an altitude of 25 km in the six-hour flighting, and the temperature of each module and detector remains at the setpoint. In the end, the result of high-altitude measurement radiance was obtained. The experimental result has verified the reliability of the entire instrument, indicating that the developed instrument can meet the high-precision calibration requirements of satellite remote sensors and is suitable for the high-altitude high-precision measurement.

Key words: remote sensing, opto-mechanical design, radiance basis method, welkin

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