Authors: Shao Wen; Tao Zui; Xie Yong; John J. Qu; Huan Hai; Tian Chuan Yang
Addresses: School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Jiangsu, Nanjing, China ' Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, 100101, China ' School of Geography and Science, Nanjing University of Information Science and Technology; National Engineering Laboratory for Remote Sensing Satellite Application, Jiangsu, Nanjing, 210044, China ' Environmental Science and Technology Center, George Mason University, Fairfax, VA, USA ' School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Jiangsu Nanjing, 210044, China ' School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Jiangsu Nanjing, 210044, China
Abstract: In order to test the in-orbit radiation characteristics of GF-1 and GF-4, and obtain accurate radiometric calibration coefficients, this paper proposes a MODIS and LandSat 8 cross-calibration method based on Dunhuang radiation correction field and a method for comparing the radiance error of GF-1 and GF-4 satellite images based on uniform regions. First, this article introduces the cross-calibration principle and the overview of the uniform target sample area, and compares the band matching and spectral response of the four remote sensors. Then, cross-calibration based on the scenes of the same area at the same time of GF-1, GF-4, MODIS, and LandSat 8 on 28 July 2017. The results show that the calibration coefficient error obtained by this method is within 6%. The error of the calibration coefficient obtained by cross-calibration with LandSat 8 satellite is smaller, which satisfies the basic remote sensing quantitative demand. The GF-1 satellite has high calibration accuracy and is suitable for cross-calibration research of China's independent satellite remote sensors. It is of great significance for the establishment of China's in-orbit calibration system.
Keywords: cross calibration; Dunhuang radiation correction field; GF-1; MODIS; GF-4; LandSat 8; visible light; near infrared.
International Journal of Embedded Systems, 2020 Vol.13 No.3, pp.328 - 340
Received: 23 Feb 2019
Accepted: 02 Sep 2019
Published online: 11 May 2020 *