{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,18]],"date-time":"2025-12-18T09:21:35Z","timestamp":1766049695418,"version":"build-2065373602"},"reference-count":44,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2021,6,26]],"date-time":"2021-06-26T00:00:00Z","timestamp":1624665600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000192","name":"National Oceanic and Atmospheric Administration","doi-asserted-by":"publisher","award":["PROTECH contract"],"award-info":[{"award-number":["PROTECH contract"]}],"id":[{"id":"10.13039\/100000192","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Due to complex radiometric calibration, the imagery collected by the Day\/Night Band (DNB) of the Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi National Polar Partnership (Suomi-NPP) and the NOAA-20 follow-on satellite is subject to artifacts such as striping, which eventually affect Earth remote sensing applications. Through comprehensive analysis using the NOAA-20 VIIRS DNB prelaunch-test and on-orbit data, it is revealed that the striping results from flaws in the calibration process. In particular, a discrepancy between the low-gain stage (LGS) Earth view (EV) gain and the onboard calibrator solar diffuser view gain makes the operational LGS gain coefficients of a few aggregation modes and detectors biased. Detector nonlinearity at low radiance level also induces errors to the mid-gain stage (MGS) and high-gain stage (HGS) gain through the biased gain ratios. These systematic errors are corrected by scaling the operational LGS gains using the factors derived from the NOAA-20 VIIRS DNB prelaunch test data and by adopting linear regression for evaluating the gain ratios. Striping in the NOAA-20 VIIRS DNB imagery is visibly reduced after the upgraded gain calibration process was implemented in the operational calibration.<\/jats:p>","DOI":"10.3390\/rs13132509","type":"journal-article","created":{"date-parts":[[2021,6,27]],"date-time":"2021-06-27T23:57:22Z","timestamp":1624838242000},"page":"2509","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Improved NOAA-20 Visible Infrared Imaging Radiometer Suite Day\/Night Band Image Quality by Upgraded Gain Calibration"],"prefix":"10.3390","volume":"13","author":[{"given":"Yalong","family":"Gu","sequence":"first","affiliation":[{"name":"Global Science and Technology, Greenbelt, MD 20770, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1066-4268","authenticated-orcid":false,"given":"Slawomir","family":"Blonski","sequence":"additional","affiliation":[{"name":"Global Science and Technology, Greenbelt, MD 20770, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9782-5337","authenticated-orcid":false,"given":"Wenhui","family":"Wang","sequence":"additional","affiliation":[{"name":"Cooperative Institute for Satellite Earth System Studies (CISESS), University of Maryland, College Park, MD 20740, USA"}]},{"given":"Sirish","family":"Uprety","sequence":"additional","affiliation":[{"name":"Cooperative Institute for Satellite Earth System Studies (CISESS), University of Maryland, College Park, MD 20740, USA"}]},{"given":"Taeyoung","family":"Choi","sequence":"additional","affiliation":[{"name":"Global Science and Technology, Greenbelt, MD 20770, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1589-7098","authenticated-orcid":false,"given":"Xi","family":"Shao","sequence":"additional","affiliation":[{"name":"Cooperative Institute for Satellite Earth System Studies (CISESS), University of Maryland, College Park, MD 20740, USA"}]},{"given":"Bin","family":"Zhang","sequence":"additional","affiliation":[{"name":"Cooperative Institute for Satellite Earth System Studies (CISESS), University of Maryland, College Park, MD 20740, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3572-6525","authenticated-orcid":false,"given":"Changyong","family":"Cao","sequence":"additional","affiliation":[{"name":"Center for Satellite Applications and Research, NOAA\/NESDIS, College Park, MD 20740, USA"}]}],"member":"1968","published-online":{"date-parts":[[2021,6,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"15706","DOI":"10.1073\/pnas.1207034109","article-title":"Suomi satellite brings to light a unique frontier of nighttime environmental sensing capabilities","volume":"109","author":"Miller","year":"2012","journal-title":"Proc. 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