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The radiometric characteristics of KOMPSAT-3A by using reference radiometric tarps and ground measurement

  • Korea Aerospace Research Institute

Research output: Contribution to conferenceConference paperpeer-review

Abstract

In this study, we performed the vicarious radiometric calibration of KOMPSAT-3A multispectral bands by using 6S radiative transfer model, radiometric tarps, MFRSR measurements. Furthermore, to prepare the accurate input parameter, we also did experiment work to measure the BRDF of radiometric tarps based on hyperspectral gonioradiometer to compensate the observation geometry difference between satellite and ASD Fieldspec® 3. Also, we measured point spread function (PSF) by using the bright star and corrected multispectral bands based on the Wiener filter. For accurate atmospheric constituent effects such as aerosol optical depth, column water, and total ozone, we used MFRSR instrument and estimated related optical depth of each gases. Based on input parameters for 6S radiative transfer model, we simulated top of atmosphere (TOA) radiance by observed by KOMPSAT-3A and matched-up the digital number. Consequently, DN to radiance coefficients was determined based on aforementioned methods and showed reasonable statistics results.

Original languageEnglish
Title of host publicationEarth Observing Systems XXI
EditorsJames J. Butler, Xingfa Gu, Xiaoxiong Xiong
PublisherSPIE
ISBN (Electronic)9781510603356
DOIs
StatePublished - 2016
EventEarth Observing Systems XXI - San Diego, United States
Duration: 2016.08.302016.09.1

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9972
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceEarth Observing Systems XXI
Country/TerritoryUnited States
CitySan Diego
Period16.08.3016.09.1

Keywords

  • 6S radiative transfer model
  • DN to radiance
  • KOMPSAT-3A
  • MFRSR
  • vicarious calibration

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