太阳辐射计视场角定标方法对比研究

大气与环境光学学报 ›› 2018, Vol. 13 ›› Issue (4): 293-303.

太阳辐射计视场角定标方法对比研究

杨久春1,2, 李正强1, 李凯涛1*, 李保生2, 李东辉1

(1中国科学院遥感与数字地球研究所，国家环境保护卫星遥感重点实验室，北京 100101；
2 合肥工业大学，安徽合肥 230009)

收稿日期:2017-04-18 修回日期:2017-05-17 出版日期:2018-07-28 发布日期:2018-07-10
作者简介:杨久春(1991-)，男，河南南阳人，研究生，主要从事遥感技术应用方面的研究。
基金资助:
Supported by STS Project of Chinese Academy of Sciences（中国科学院STS项目），National Natural Science Foundation of China(国家自然科学基金，41401423,41501390）

Comparison of Calibration Methods of Field for View of Sun Radiometer

YANG Jiuchun1,2, LI Zhengqiang1, LI Kaitao1*, LI Baosheng2, LI Donghui1

(1 State Environmental Protection Key Laboratory of Satellite Remote Sensing, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China;
2 Hefei University of Technology, Hefei 230009, China)

Received:2017-04-18 Revised:2017-05-17 Published:2018-07-28 Online:2018-07-10
Supported by:
Supported by STS Project of Chinese Academy of Sciences（中国科学院STS项目），National Natural Science Foundation of China(国家自然科学基金，41401423,41501390）

摘要/Abstract

摘要：

太阳辐射计是观测大气气溶胶重要的地基遥感设备，其定标是获取高精度气溶胶产品的前提条件。视场角(field of view, FOV) 是太阳辐射计的重要参数，也是传递定标的关键参数。基于SONET观测网2016年定标实验，对传递定标方法（单次传递及历史传递平均结果）和矩阵扫描法获得的仪器FOV进行对比分析，结果表明：单次传递、历史传递平均和激光矩阵扫描结果与仪器的FOV设计值平均相对误差在2%~3%之内，而三种方法获得的FOV最大相对误差为1.59%，满足FOV的精度要求。误差分析表明，传递定标法误差主要来自积分球辐亮度定标系数，而矩阵扫描法的误差主要由激光面光源引起。但三种方法各有优劣，可以相互验证、相互补充，以获得更加准确的仪器FOV参数。

关键词: 太阳辐射计, 对比定标, 视场角, 传递定标, 矩阵扫描

Abstract:

Sun radiometer is an important ground-based remote sensing device to observe atmospheric aerosol, and the calibration is a prerequisite to obtain the high accuracy of aerosol products. Field of view (FOV) is an important parameter of sun radiometer, and it is also a key parameter for the transfer calibration. Based on the calibration experiment of Sun-sky radiometer observation network (SONET) in 2016, the FOV of instruments obtained by transfer method (single transfer and the average result of historical transfer) and matrix scanning method were analyzed, and the result showed out that the average relative error of the results obtained by single transfer, the average of historical transfer and the matrix scanning is within 2%~3%, and the max average relative error is 1.59% compared with themselves. The three methods can satisfy the requirements of the precision of FOV. The error analysis shows that the error of transfer calibration method mainly comes from integrating sphere radiance calibration coefficient, and the error of matrix scanning method is mainly caused by the laser beam. However, these three methods all have their own advantages and disadvantages. They can verify and complement each other, in order to obtain more accurate FOV of the instrument.

Key words: sun radiometer, inter-calibration, field of view, transfer calibration, matrix scanning

中图分类号:

TH753

杨久春李正强李凯涛李保生李东辉. 太阳辐射计视场角定标方法对比研究[J]. 大气与环境光学学报, 2018, 13(4): 293-303.

YANG Jiu-Chun, LI Zheng-Qiang, LI Kai-Tao, LI Bao-Sheng, LI Dong-Hui. Comparison of Calibration Methods of Field for View of Sun Radiometer[J]. Journal of Atmospheric and Environmental Optics, 2018, 13(4): 293-303.

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