@Article{GouveiaAlvePere:2019:PrSeCb,
               author = "Gouveia, Nelson de Almeida and Alves, F{\'a}bio Corr{\^e}a and 
                         Pereira, Luciana de Oliveira",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {University of 
                         Exeter}",
                title = "Pre-processing of Sentinel-1 C-band SAR images based on incidence 
                         angle correction for dark target detection",
              journal = "Remote Sensing Letters",
                 year = "2019",
               volume = "10",
               number = "10",
                pages = "939--948",
                month = "Oct.",
             abstract = "Wide swath synthetic aperture radar (SAR) has been commonly used 
                         for oceanographic applications, such as maritime safety, fisheries 
                         management and coastal monitoring, including dark target 
                         detection. However, the incidence angle (theta) effect on these 
                         data makes a direct visualization and classification of 
                         oceanographic targets troublesome. The recent availability of 
                         free-of-charge Sentinel-1 C-band data have the potential to assess 
                         methods for correcting the theta in wide swath SAR images, an 
                         issue that still remains to be undertaken. The goal of this work 
                         was to test two methods for correcting the theta effect of two 
                         Sentinel-1 SAR imaging modes and assess their implications for 
                         dark target detection in a sector of the South Atlantic Ocean. We 
                         assessed the empirical modelling and square cosine-based methods 
                         for correcting the theta effect on co and cross-polarization from 
                         the Interferometric Wide Swath (IW) and Extra Wide Swath (EW) 
                         imaging modes. The results showed that the empirical modelling 
                         method improved the visualization and classification of dark 
                         targets for the co-polarized bands from both the imaging modes. 
                         However, further studies are necessary to test the potential of 
                         empirical modelling for correcting the theta for other different 
                         oceanic environments and SAR frequencies.",
                  doi = "10.1080/2150704X.2019.1634300",
                  url = "http://dx.doi.org/10.1080/2150704X.2019.1634300",
                 issn = "2150-704X",
             language = "en",
           targetfile = "Gouveia_pre processing.pdf",
        urlaccessdate = "27 abr. 2024"
}