A sensitivity study for the calibration of hyperspectral spectrometer on board the geostationary multipurpose satellite of Korea

Myoung Hwan Ahn, Mina Kang, Xiong Liu, Jhoon Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A spectral calibration algorithm for the hyperspectral geostationary environmental monitoring spectrometer (GEMS) onboard GEO-KOMPSAT-2B (GK-2B) planned to launch in 2019 has been developed. Although spectral registration for the CCD detector is done by the optical parameters prepared during the ground test of the instrument, the algorithm is applied for the improved spectral accuracy. The prototype algorithm is based on the best fitting of the measured spectrum to the known high resolution reference spectrum such as the solar irradiance. To characterize the prototype algorithm, a series of sensitivity tests for various spectral parameters, such as squeeze, shift, spectral response function, and reference solar spectrum, has been performed. The prototype algorithm shows a minimal sensitive to the uncertainties associated with several parameters such as squeeze, shift, or spectral band. However, the algorithm performance degrades by an order if the spectral response function including its shape has uncertainty. Thus, it is recommended to measure the spectral response function at the ground test as accurately as possible. Furthermore, the prototype algorithm is also highly sensitive to the used reference solar spectrum, which needs further investigation.

Original languageEnglish
Title of host publicationThird International Conference on Remote Sensing and Geoinformation of the Environment, RSCy 2015
EditorsSilas Michaelides, Diofantos G. Hadjimitsis, Kyriacos Themistocleous, Giorgos Papadavid
PublisherSPIE
ISBN (Electronic)9781628417005
DOIs
Publication statusPublished - 2015 Jan 1
Event3rd International Conference on Remote Sensing and Geoinformation of the Environment, RSCy 2015 - Paphos, Cyprus
Duration: 2015 Mar 162015 Mar 19

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9535
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

Other3rd International Conference on Remote Sensing and Geoinformation of the Environment, RSCy 2015
CountryCyprus
CityPaphos
Period15/3/1615/3/19

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Ahn, M. H., Kang, M., Liu, X., & Kim, J. (2015). A sensitivity study for the calibration of hyperspectral spectrometer on board the geostationary multipurpose satellite of Korea. In S. Michaelides, D. G. Hadjimitsis, K. Themistocleous, & G. Papadavid (Eds.), Third International Conference on Remote Sensing and Geoinformation of the Environment, RSCy 2015 [95351U] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9535). SPIE. https://doi.org/10.1117/12.2192534