@Article{PintoPoCaLeMiAaHe:2016:FiInRa,
               author = "Pinto, Cibele Teixeira and Ponzoni, Fl{\'a}vio Jorge and Castro, 
                         Ruy and Leigh, Larry and Mishra, Nischal and Aaron, David and 
                         Helder, Dennis",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto de Estudos 
                         Avan{\c{c}}ados (IEAv)} and {South Dakota State University} and 
                         {South Dakota State University} and {South Dakota State 
                         University} and {South Dakota State University}",
                title = "First in-flight radiometric calibration of MUX and WFI on-board 
                         CBERS-4",
              journal = "Remote Sensing",
                 year = "2016",
               volume = "8",
               number = "5",
                pages = "405",
             keywords = "absolute calibration, CBERS-4, cross-calibration, Landsat, 
                         radiometric calibration, reflectance-based.",
             abstract = "Brazil and China have a long-term joint space based sensor program 
                         called China-Brazil Earth Resources Satellite (CBERS). The most 
                         recent satellite of this program (CBERS-4) was successfully 
                         launched on 7 December 2014. This work describes a complete 
                         procedure, along with the associated uncertainties, used to 
                         calculate the in-flight absolute calibration coefficients for the 
                         sensors Multispectral Camera (MUX) and Wide-Field Imager (WFI) 
                         on-board CBERS-4. Two absolute radiometric calibration techniques 
                         were applied: (i) reflectance-based approach and (ii) 
                         cross-calibration method. A specific site at Algodones Dunes 
                         region located in the southwestern portion of the United States of 
                         America was used as a reference surface. Radiometric ground and 
                         atmospheric measurements were carried out on 9 March 2015, when 
                         CBERS-4 passed over the region. In addition, a cross-calibration 
                         between both MUX and WFI on-board CBERS-4 and the Operational Land 
                         Imager (OLI) on-board Landsat-8 was performed using the Libya-4 
                         Pseudo Invariant Calibration Site. The gain coefficients are now 
                         available: 1.68, 1.62, 1.59 and 1.42 for MUX and 0.379, 0.498, 
                         0.360 and 0.351 for WFI spectral bands blue, green, red and NIR, 
                         respectively, in units of (W/(m2 ¨ sr¨ µm))/DN. These coefficients 
                         were determined with uncertainties lower than 3.5%. As a 
                         validation of these radiometric coefficients, cross-calibration 
                         was also undertaken. An evaluation of radiometric consistency was 
                         performed between the two instruments (MUX and WFI) on-board 
                         CBERS-4 and with the well calibrated Landsat-7 ETM+. Results show 
                         that the reflectance values match in all the analogous spectral 
                         bands within the specified calibration uncertainties.",
                  doi = "10.3390/rs8050405",
                  url = "http://dx.doi.org/10.3390/rs8050405",
                 issn = "2072-4292",
                label = "lattes: 6400276533232777 1 PintoPoCaLeMiAaHe:2016:FiInRa",
             language = "en",
           targetfile = "pinto_first.pdf",
                  url = "http://www.mdpi.com/2072-4292/8/5/405/htm",
        urlaccessdate = "11 maio 2024"
}