Mao, J.; Wang, Y.; Shi, E.; Hu, X.; Wang, Q.; Wang, J. Pre-Launch Multi-Energy Radiance Calibration of the OMS-N. Remote Sens.2024, 16, 119.
Mao, J.; Wang, Y.; Shi, E.; Hu, X.; Wang, Q.; Wang, J. Pre-Launch Multi-Energy Radiance Calibration of the OMS-N. Remote Sens. 2024, 16, 119.
Mao, J.; Wang, Y.; Shi, E.; Hu, X.; Wang, Q.; Wang, J. Pre-Launch Multi-Energy Radiance Calibration of the OMS-N. Remote Sens.2024, 16, 119.
Mao, J.; Wang, Y.; Shi, E.; Hu, X.; Wang, Q.; Wang, J. Pre-Launch Multi-Energy Radiance Calibration of the OMS-N. Remote Sens. 2024, 16, 119.
Abstract
This paper presents the prelaunch radiometric calibration of the Ozone Monitor Suite - Nadir (OMS-N) instrument, a vital payload on the FY-3F satellite. FY-3F achieved a successful launch on August 3, 2023. The radiance calibration of the OMS-N instrument was achieved using an integrating sphere, with known exit radiance ascertained through a transferring radiometer. The calibration model incorporates six energy levels. The Solar Simulator Standard System was employed to validate the calibration results, selecting specific rows to represent varying spatial dimensions. Considering the influence of xenon lamp characteristic peaks and transmission errors during the calibration process, the average deviation remained within 2.3% for the UVIS channel, 3% for the UV1 channel, and 2.2% for the UV2 channel. Furthermore, this study analyzed the uncertainty of the radiometric calibration. The results indicated an absolute uncertainty of 2.32% for both UV1 and UV2 channels, while the VIS channel exhibited an uncertainty of 1.67%. The relative uncertainty was 1.84% for both UV1 and UV2 channels, with the VIS channel exhibiting an uncertainty of 1.45%. The obtained calibration coefficients are accurate and reliable and can be used for the inversion of product parameters, which is of great significance to the quantitative application of satellite data and the advancement of scientific research on quantitative remote sensing.
Keywords
radiance; integrating sphere; calibration
Subject
Engineering, Other
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
