{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T23:22:10Z","timestamp":1783034530001,"version":"3.54.6"},"reference-count":39,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2020,4,30]],"date-time":"2020-04-30T00:00:00Z","timestamp":1588204800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In recent years, Korea has sustained consistent access to remote sensed data by launching Korea Multi-Purpose Satellite-3A (KOMPSAT-3A, K3A)\u2014an updated version of the high-resolution KOMPSAT series. This KOMPSAT-3A required calibration and validation (Cal\/Val) before and after its launch to enable proper functional characterization and to maintain the veracity of data collected. The Korea Aerospace Research Institute (KARI) executed the initial prelaunch calibration in the laboratory and we performed the Cal\/Val of KOMPSAT-3A during the Launch and Early Operation Phase (LEOP) in the field. Two suitable sites in Korea and Mongolia with stable weather, almost uniform terrain, and near Lambertian diffusion, provided the necessary tarp reflectance to calculate the absolute radiometric calibration coefficients. The surface reflectance was determined using 12 and four well-calibrated reference reflectance tarps employing the FieldSpec\u00ae 3(Analytical Spectral Devices Inc., Boulder, CO, USA) Spectroradiometer. Subsequently, the top of atmosphere (TOA) radiance was estimated using radiative transfer code (RTC) software based on the Atmospheric and Topographic Correction (ATCOR). In addition, cross calibration was simultaneously performed at the Libya-4 pseudo invariant calibration site (PICS) for KOMPSAT-3A TOA radiance, using the spectral band adjustment factor (SBAF) compensated Landsat 8 reflectance and the Second Simulation of Satellite Signal in the Solar Spectrum (6S) to compute cross calibration coefficients. The results of the KOMPSAT-3A absolute calibration coefficient show that the R2 values were over 0.99, implying a significant correlation for almost all bands between the TOA radiance and the KOMPSAT-3A spectral band response at both campaign sites. However, this study reveals a difference of less than 5% calibration gains for all bands compared to the prelaunch values, while the cross calibration gain is below 5% in visible bands and above 5% in the near infrared band. An effort to optimize the reliability of the absolute calibration coefficients resorted to the rigorous quantification of uncertainties amongst atmospheric conditions, the digital number (DN), the reflectance tarp, the bidirectional reflectance distribution function (BRDF), and ozone levels. Therefore, we presumed that the total uncertainty was 4.27%, which conforms to some published results.<\/jats:p>","DOI":"10.3390\/s20092564","type":"journal-article","created":{"date-parts":[[2020,5,4]],"date-time":"2020-05-04T14:00:43Z","timestamp":1588600843000},"page":"2564","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Radiometric Calibration and Uncertainty Analysis of KOMPSAT-3A Using the Reflectance-Based Method"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1307-5231","authenticated-orcid":false,"given":"Cheonggil","family":"Jin","sequence":"first","affiliation":[{"name":"Division of Earth Environmental System Science (Major of Spatial Information Engineering), Pukyong National University, Busan 49513, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hoyong","family":"Ahn","sequence":"additional","affiliation":[{"name":"Division of Earth Environmental System Science (Major of Spatial Information Engineering), Pukyong National University, Busan 49513, Korea"},{"name":"Department of Agricultural Biology, Climate Change and Agro-Ecology Division, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 55365, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Doochun","family":"Seo","sequence":"additional","affiliation":[{"name":"Image Data System Development Division, National Satellite Operation &amp; Application Center, Korea Aerospace Research Institute, Daejeon 34133, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chuluong","family":"Choi","sequence":"additional","affiliation":[{"name":"Division of Earth Environmental System Science (Major of Spatial Information Engineering), Pukyong National University, Busan 49513, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,4,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2925","DOI":"10.1109\/TGRS.2014.2366779","article-title":"Uncertainty Evaluation of an In-Flight Absolute Radiometric Calibration Using a Statistical Monte Carlo Method","volume":"53","author":"Chen","year":"2015","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"8803","DOI":"10.3390\/rs6098803","article-title":"Radiometric Calibration Methodology of the Landsat 8 Thermal Infrared Sensor","volume":"6","author":"Montanaro","year":"2014","journal-title":"Remote Sens."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"194","DOI":"10.1016\/S0034-4257(98)00111-4","article-title":"Calibration of Space-Multispectral Imaging Sensors: A Review","volume":"68","author":"Dinguirard","year":"1999","journal-title":"Remote Sens. Environ."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"91","DOI":"10.1016\/0034-4257(90)90010-J","article-title":"Improved evaluation of optical depth components from langley plot data","volume":"32","author":"Biggar","year":"1990","journal-title":"Remote Sens. Environ."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"11","DOI":"10.1016\/0034-4257(87)90026-5","article-title":"Reflectance- and radiance-based methods for the in-flight absolute calibration of multispectral sensors","volume":"22","author":"Slater","year":"1987","journal-title":"Remote Sens. Environ."},{"key":"ref_6","unstructured":"Thome, K., Gellman, D., Parada, R., Biggar, S., Slater, P., and Moran, M. (1993, January 11\u201316). In-flight radiometric calibration of Landsat5 Thematic Mapper from 1984 to the present. Proceedings of the Optical Engineering and Photonics in Aerospace Sensing, Orlando, FL, USA."},{"key":"ref_7","unstructured":"Gellman, D.I., Dinguirard, M.C., Henry, P.J., Moran, M.S., Thome, K.J., and Slater, P.N. (1993, January 11\u201316). Review of SPOT-1 and -2 calibrations at White Sands from launch to the present. Proceedings of the Optical Engineering and Photonics in Aerospace Sensing, Orlando, FL, USA."},{"key":"ref_8","unstructured":"Meygret, A., Dinguirard, M., and Henry, P. (October, January 29). Eleven Years of Experience and Data in Calibration SPOT HRV Cameras. Proceedings of the Sensors and Mapping from Space, Hannover, Germany."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1016\/j.rse.2003.07.008","article-title":"Radiometric characterization of IKONOS multispectral imagery","volume":"88","author":"Pagnutti","year":"2003","journal-title":"Remote Sens. Environ."},{"key":"ref_10","unstructured":"Jin, C.-G., Lim, H.-S., and Lee, S.-G. (2013, January 20\u201324). Comparison of TOA Reflectance calculated with images taken by KOMPSAT-3 and LANDSAT-8. Proceedings of the 34th Asian Conference on Remote Sensing (ACRS 2013), Bali, Indonesia."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"3594","DOI":"10.1117\/1.JRS.6.063594","article-title":"Absolute radiometric calibration of the KOMPSAT-2 multispectral camera using a reflectance-based method and empirical comparison with IKONOS and QuickBird images","volume":"6","author":"Lee","year":"2012","journal-title":"J. Appl. Remote Sens."},{"key":"ref_12","unstructured":"Richter, R., and Schl\u00e4pfer, D. (2019). Atmospheric\/Topographic Correction for Satellite Imagery, ReSe Applications Schl\u00e4pfer. Available online: https:\/\/www.dlr.de\/eoc\/Portaldata\/60\/Resources\/dokumente\/5_tech_mod\/atcor3_manual_2012.pdf."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"053544","DOI":"10.1117\/1.3613950","article-title":"Absolute radiometric calibration of the RapidEye multispectral imager using the reflectance-based vicarious calibration method","volume":"5","author":"Naughton","year":"2011","journal-title":"J. Appl. Remote Sens."},{"key":"ref_14","unstructured":"(2020, February 28). Available online: https:\/\/www.yesinc.com\/resource\/products\/hygrometrytemperature\/ptu2000ds.pdf."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"304","DOI":"10.1016\/S0034-4257(01)00211-5","article-title":"A generalized approach to the vicarious calibration of multiple Earth observation sensors using hyperspectral data","volume":"77","author":"Teillet","year":"2001","journal-title":"Remote Sens. Environ."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"2277","DOI":"10.1109\/LGRS.2015.2468174","article-title":"Quantifying Libya-4 Surface Reflectance Heterogeneity With WorldView-1, 2 and EO-1 Hyperion","volume":"12","author":"Neigh","year":"2015","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_17","unstructured":"(2020, February 29). (PDF) Radiometric Cross Calibration of Landsat 8 Operational Land Imager (OLI) and Landsat 7 Enhanced Thematic Mapper Plus (ETM+). Available online: https:\/\/www.researchgate.net\/publication\/269634233_Radiometric_Cross_Calibration_of_Landsat_8_Operational_Land_Imager_OLI_and_Landsat_7_Enhanced_Thematic_Mapper_Plus_ETM."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"4301","DOI":"10.1029\/JC087iC06p04301","article-title":"A detailed study of snow accumulation and stable isotope content in Dome C (Antarctica)","volume":"87","author":"Petit","year":"1982","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"83","DOI":"10.1016\/j.rse.2003.10.006","article-title":"Surface characterisation of the Dome Concordia area (Antarctica) as a potential satellite calibration site, using Spot 4\/Vegetation instrument","volume":"89","author":"Six","year":"2004","journal-title":"Remote Sens. Environ."},{"key":"ref_20","unstructured":"Jensen, J.R. (2015). Introductory Digital Image Processing: A Remote Sensing Perspective, Pearson. [4th ed.]."},{"key":"ref_21","unstructured":"Schl\u00e4pfer, D., and Nieke, J. (2005, January 27\u201329). Operational simulation of at sensor radiance sensitivity using the MODO\/MODTRAN4 environment. Proceedings of the EARSeL Fourth Workshop on Imaging Spectroscopy, Warsaw, Poland."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"62331F","DOI":"10.1117\/12.665077","article-title":"MODTRAN5: 2006 update","volume":"Volume 6233","author":"Berk","year":"2006","journal-title":"Proceedings of the Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XII"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"123","DOI":"10.1016\/S0034-4257(02)00029-9","article-title":"Radiometric normalization of multitemporal high-resolution satellite images with quality control for land cover change detection","volume":"82","author":"Du","year":"2002","journal-title":"Remote Sens. Environ."},{"key":"ref_24","unstructured":"(2020, January 15). USGS Test Sites Catalog|Calval Center of Excellence, Available online: https:\/\/calval.cr.usgs.gov\/apps\/test_sites_catalog."},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Cao, C., Xiong, X., Wu, A., and Wu, X. (2008). Assessing the consistency of AVHRR and MODIS L1B reflectance for generating Fundamental Climate Data Records. J. Geophys. Res., 113.","DOI":"10.1029\/2007JD009363"},{"key":"ref_26","unstructured":"Ryan, R.E., and Pagnutti, M. (2009, January 7\u201311). Enhanced Absolute and Relative Radiometric Calibration for Digital Aerial Cameras. Proceedings of the 52nd Photogrammetric Week, Stuttgart, Germany."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Belward, A.S., and Valenzuela, C.R. (1991). Remote Sensing and Geographical Information Systems for Resource Management in Developing Countries, Springer. [1991 ed.].","DOI":"10.1007\/978-94-017-2879-9"},{"key":"ref_28","unstructured":"Brooke, B. (2012). Characterization of the Libyan desert in support of vicarious calibration. [Master\u2019s Thesis, Northeastern University]."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"2524","DOI":"10.1109\/TED.2009.2030648","article-title":"Time-Delay-Integration Architectures in CMOS Image Sensors","volume":"56","author":"Lepage","year":"2009","journal-title":"IEEE Trans. Electron. Devices"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"23","DOI":"10.1016\/j.rse.2003.08.014","article-title":"IKONOS satellite, imagery, and products","volume":"88","author":"Dial","year":"2003","journal-title":"Remote Sens. Environ."},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Kim, J., Jin, C., Choi, C., and Ahn, H. (2015). Radiometric characterization and validation for the KOMPSAT-3 sensor. IEEE Geosci. Remote Sens. Lett.","DOI":"10.1080\/2150704X.2015.1054043"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"245","DOI":"10.1016\/0034-4257(94)90145-7","article-title":"Uncertainties in the in-flight calibration of sensors with reference to measured ground sites in the 0.4-1.1 \u03bcm range","volume":"48","author":"Biggar","year":"1994","journal-title":"Remote Sens. Environ."},{"key":"ref_33","first-page":"012005","article-title":"Modeling and intercomparison of field and laboratory hyperspectral goniometer measurements with G-LiHT imagery of the Algodones Dunes","volume":"12","author":"Bachmann","year":"2017","journal-title":"JARS"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"4455","DOI":"10.1364\/AO.46.004455","article-title":"Validation of a vector version of the 6S radiative transfer code for atmospheric correction of satellite data Part II Homogeneous Lambertian and anisotropic surfaces","volume":"46","author":"Kotchenova","year":"2007","journal-title":"Appl. Opt."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"1364","DOI":"10.1364\/AO.22.001364","article-title":"Dynamics of directional reflectance factor distributions for vegetation canopies","volume":"22","author":"Kimes","year":"1983","journal-title":"Appl. Opt."},{"key":"ref_36","unstructured":"Norton, J. (2020, February 28). The Atacama Desert Project: NDVI Processing Sequence and Rational. Available online: https:\/\/www.giscorps.org\/atacama_129\/."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"343","DOI":"10.1080\/01431161.2011.597792","article-title":"The exceptional ozone depletion over the Arctic in January\u2013March 2011","volume":"3","author":"Varotsos","year":"2012","journal-title":"Remote Sens. Lett."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"2","DOI":"10.1016\/j.rse.2006.07.024","article-title":"The MISR radiometric calibration process","volume":"107","author":"Bruegge","year":"2007","journal-title":"Remote Sens. Environ."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1360","DOI":"10.1109\/TGRS.2013.2243738","article-title":"Absolute Radiometric Calibration of Landsat Using a Pseudo Invariant Calibration Site","volume":"51","author":"Helder","year":"2013","journal-title":"IEEE Trans. Geosci. Remote Sens."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/9\/2564\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,13]],"date-time":"2025-10-13T13:52:12Z","timestamp":1760363532000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/9\/2564"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,4,30]]},"references-count":39,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2020,5]]}},"alternative-id":["s20092564"],"URL":"https:\/\/doi.org\/10.3390\/s20092564","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,4,30]]}}}