@InProceedings{SantosNarvGraçGonç:2009:AnALPo,
               author = "Santos, Jo{\~a}o Roberto dos and Narvaes, Igor da Silva and 
                         Gra{\c{c}}a, Paulo Maur{\'{\i}}cio Lima de Alencastro and 
                         Gon{\c{c}}alves, F{\'a}bio Guimar{\~a}es",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)}",
                title = "Analysis of ALOS/PALSAR polarimetric signatures and scattering 
                         mechanisms of forest types in tapaj{\'o}s region, brazil",
            booktitle = "Proceedings...",
                 year = "2009",
         organization = "ALOS PI 2008. Symposium.",
            publisher = "H. Lacoste \& L. Ouwehand",
             keywords = "ALOS/PALSAR, Brazilian Amazon, Dimensional spaces, Ellipticity 
                         angle, Forest inventory, Forest type, Interaction mechanisms, 
                         Orientation angles, Pixel distribution, Polar components, Radar 
                         signals, Scattering mechanisms, Secondary succession, Structural 
                         parameter, Target decomposition, Three-dimensional graphics, 
                         Tropical forest, Polarimeters, Polarographic analysis, 
                         Scattering.",
             abstract = "In this paper we analyzes the PALSAR polarimetric signatures and 
                         scattering mechanisms of tropical forest typologies based on 
                         target decomposition. At the representation of polarimetric 
                         signatures, the crosssection of the forest target ({\"{\I}}) was 
                         plotted on a threedimensional graphic as a function of the 
                         orientation angle, ellipticity angle and the intensity of co-polar 
                         components of the radar signal. The analysis of scattering 
                         mechanisms was done by the association of entropy and mean alpha 
                         angle values for each sample, introduced to the bi-dimensional 
                         classification space. Some results can be mentioned: (a) from the 
                         analysis of signatures one can verify that the secondary 
                         succession stages present a relatively high pedestal when compared 
                         to the forested sections; (b) the pixel distribution in the (H) 
                         bi-dimensional space was more frequent at zones 4, 5 and 9 for 
                         forest with or without timber exploitation and for the advanced 
                         secondary succession. This study improves the understanding of the 
                         interaction mechanisms between L-band PALSAR signals and 
                         structural parameters, subsidizing the forest inventory in the 
                         Brazilian Amazon region.",
  conference-location = "Island of Rhodes Noordwijk, Netherlands",
      conference-year = "3 -7 Nov. 2008",
                 isbn = "03796566",
                 issn = "9789292212285",
                label = "lattes: 7502529550855080 2 
                         SantosNarvGra{\c{c}}Gon{\c{c}}:2009:ANALPO",
             language = "en",
                  ibi = "J8LNKAN8RW/36GB4U7",
                  url = "http://urlib.net/ibi/J8LNKAN8RW/36GB4U7",
           targetfile = "santos_analise.pdf",
                  url = "http://earth.esa.int/ALOS2008/programme.html",
               volume = "ESA SP, 664",
        urlaccessdate = "2024, May 03"
}