On-Orbit Radiometric Calibration Method of Optical Remote Sensor in Complex Environment

被引：0

作者：

Bao S. ^{[1
,2
]}

Chen H. ^{[1
]}

Zhang L. ^{[1
]}

Huang W. ^{[1
]}

Si X. ^{[1
]}

Zhang C. ^{[3
]}

Chen Z. ^{[3
]}

机构：

[1] Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei

[2] University of Science and Technology of China, Hefei

[3] Beijing Institute of Remote Sensing Information, Beijing

来源：

Guangxue Xuebao/Acta Optica Sinica | 2022年 / 42卷 / 06期

关键词：

Gray-scale target; Irradiance-based method; Radiometric calibration; Remote sensing;

D O I：

10.3788/AOS202242.0628001

中图分类号：

学科分类号：

摘要：

Vicarious calibration in large and uniform sites by the reflectance-based method is currently a common on-orbit calibration method. The limited number and low reflectivity of uniform sites in China have restricted calibration frequency and accuracy. The gray-scale target method has achieved high-precision radiometric calibration in a uniform site, but how to break through the single environmental background of a large uniform site to achieve high-frequency calibration is still a tough problem. On the basis of the classic irradiance-based method, this paper proposes an improved irradiance-based method suitable for gray-scale targets, analyzes a method of on-orbit radiometric calibration in complex environments, and experimentally verifies the method on an optical satellite. The results show that the proposed improved irradiance-based method, with a maximum difference of less than 3.5% from the reflectance-based method, can achieve on-orbit radiometric calibration in a complex background. It provides a technical approach for high-frequency and high-precision on-orbit radiometric calibration of optical satellites in China. © 2022, Chinese Lasers Press. All right reserved.

引用

共 11 条

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