大气与环境光学学报 ›› 2019, Vol. 14 ›› Issue (4): 296-302.

• 光学遥感 • 上一篇    下一篇

双通道自校准辐射计与辐亮度标准探测器的比对实验研究

白米粒1,2,李健军1,高冬阳1,胡友勃1,谢臣瑜1,闫静1,郑小兵4   

  1. 1 中国科学院安徽光学精密机械研究所中国科学院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:2018-03-07 修回日期:2018-04-04 出版日期:2019-07-28 发布日期:2019-07-12
  • 通讯作者: 白米粒

Comparison Experiment of Two-Channel Self-Calibration Radiometer and Radiance Standard Detector

  • Received:2018-03-07 Revised:2018-04-04 Published:2019-07-28 Online:2019-07-12

摘要: 基于自发参量下转换的高精度自校准辐射基准源是目前卫星遥感定标的研究热点。本文介绍了双通道自校准辐射计的工作原理并搭建了实验装置,展开了与传统辐亮度标准探测器的比对实验验证。采用736.9nm激光导入积分球的单色均匀辐亮度光源,将双通道自校准辐射计和辐亮度标准探测器分别对积分球出口辐亮度进行探测,测得绝对辐亮度分别为4.69×10-9W/(sr?mm2)和5.19×10-9W/(sr?mm2),二者之间的相对偏差为9.63%,验证了研制的双通道自校准辐射计的原理可行性。

关键词: 辐射定标, 自校准辐射计, 辐亮度标准探测器, 辐亮度, 相对偏差

Abstract: High-precision self-calibration radiation reference source based on spontaneous parametric down-conversion was the research hotspot of satellite remote sensing calibration. The principle of two-channel self-calibration radiometer was introduced, and a set of experimental device was established, then the comparison of experimental verification was expanded with traditional radiometric standard detector. Monochromatic uniform radiance light source with 736.9nm laser was used by integrating sphere, then the radiance of the integrating sphere exit was measured by two-channel self-calibration radiometer and radiance standard detector respectively, the measured absolute radiances results were 4.69×10-9W/(sr?mm2) and 5.19×10-9W/(sr?mm2), so the relative deviation was 9.63%, the feasibility of the principle of two-channel self-calibration radiometer was verified.

Key words: radiation calibration, self-calibration radiometer, radiation standard detector, radiance, relative deviation