{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,2]],"date-time":"2026-03-02T22:25:15Z","timestamp":1772490315879,"version":"3.50.1"},"reference-count":15,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2023,1,11]],"date-time":"2023-01-11T00:00:00Z","timestamp":1673395200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Key R&amp;D Program of China","award":["2022YFB3903000"],"award-info":[{"award-number":["2022YFB3903000"]}]},{"name":"National Key R&amp;D Program of China","award":["2022YFB3903005"],"award-info":[{"award-number":["2022YFB3903005"]}]},{"name":"National Key R&amp;D Program of China","award":["2022YFB3903200"],"award-info":[{"award-number":["2022YFB3903200"]}]},{"name":"National Key R&amp;D Program of China","award":["2022YFB3903201"],"award-info":[{"award-number":["2022YFB3903201"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>In this paper, an irradiance-based absolute radiometric calibration campaign at Baotou calibration site during June and July 2018 was described. This radiometric calibration campaign made use of six radiometric calibration tarps. The synchronous measurements of parameters such as surface reflectance, atmospheric parameters, and diffuse-to-global irradiance ratio were collected at the satellite overpass. The top-of-atmospheric radiance was predicted by radiative transfer model with these synchronous measurements. The linear relationship between DNs of satellite sensor and band-specific top-of-atmospheric spectral radiance was established, and a stable and reliable absolute calibration coefficient of ZY3-02 MUX was determined in this campaign. We compared the calibration results of the irradiance-based method with those of the reflectance-based method. The results suggested that the irradiance-based method is better than reflectance-based method.<\/jats:p>","DOI":"10.3390\/rs15020448","type":"journal-article","created":{"date-parts":[[2023,1,12]],"date-time":"2023-01-12T03:11:02Z","timestamp":1673493062000},"page":"448","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Absolute Radiometric Calibration of ZY3-02 Satellite Multispectral Imager Based on Irradiance-Based Method"],"prefix":"10.3390","volume":"15","author":[{"given":"Hongzhao","family":"Tang","sequence":"first","affiliation":[{"name":"Land Satellite Remote Sensing Application Center, Ministry of Natural Resources, Beijing 100094, China"}]},{"given":"Junfeng","family":"Xie","sequence":"additional","affiliation":[{"name":"Land Satellite Remote Sensing Application Center, Ministry of Natural Resources, Beijing 100094, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2585-9984","authenticated-orcid":false,"given":"Wei","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China"}]},{"given":"Honggeng","family":"Zhang","sequence":"additional","affiliation":[{"name":"Land Satellite Remote Sensing Application Center, Ministry of Natural Resources, Beijing 100094, China"},{"name":"College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-3179-2366","authenticated-orcid":false,"given":"Hengyang","family":"Wang","sequence":"additional","affiliation":[{"name":"Changchun Institute of Optics, Fine Mechanics and Physics, University of Chinese Academy of Sciences, Changchun 130033, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"27","DOI":"10.1016\/S0034-4257(01)00247-4","article-title":"Absolute Radiometric Calibration of Landsat 7 ETM+ Using the Reflectance-Based Method","volume":"78","author":"Thome","year":"2001","journal-title":"Remote Sens. 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