@Article{RosaOliRodMorOli:2020:RePaIn,
               author = "Rosa, Rafael A. S. and Oliveira, Cleber G. and Rodrigues, Thiago 
                         G. and Moreira, Eder P. and Oliveira, V{\^a}nia Maria de",
          affiliation = "{Visiona Tecnologia Espacial S.A} and {Visiona Tecnologia Espacial 
                         S.A} and {Visiona Tecnologia Espacial S.A} and {Visiona Tecnologia 
                         Espacial S.A} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)}",
                title = "Repeat pass interferometry using ALOS-2 palsar-2 data (study case 
                         in Brazil)",
              journal = "International Archives of the Photogrammetry, Remote Sensing and 
                         Spatial Information Sciences",
                 year = "2020",
               volume = "43",
               number = "B1",
                pages = "107--113",
                month = "Aug.",
                 note = "2020 24th ISPRS Congress - Technical Commission I; Nice, Virtual; 
                         France; 31 August 2020 through 2 September 2020",
             keywords = "SAR, Synthetic Aperture Radar, Interferometry, InSAR, DEM, Digital 
                         Elevation Model, PALSAR, ALOS.",
             abstract = "We performed a process called SAR Interferometry (InSAR) to 
                         generate Digital Elevation Models (DEMs) from data pairs of the 
                         PALSAR-2 Synthetic Aperture Radar, from the ALOS-2 satellite. The 
                         pair of images used is a permutation between all acquired 
                         acquisitions of SAR data from ALOS-2, more precisely, we used data 
                         from two satellite passages (temporally spaced) in which the 
                         sensor was imaging the same area on the ground. There were 
                         PALSAR-2 L-Band Ultrafine images with an interval of 14 days 
                         between acquisitions (which is precisely the revisit time of the 
                         satellite) from two forest regions in the Parana state, Brazil. 
                         After the ´ generation of the DEM, we observed a systematic error 
                         that generated a kind of very sharp ramp in the azimuthal 
                         direction. In this paper we present the followed steps and the 
                         investigation carried out to discover the causes of the error. We 
                         could observe that the satellite paths on the two dates suffer a 
                         relative displacement between them. In other words, this error 
                         occurs due to a non-constant baseline. This work was part of the 
                         R\&D project of FAPESP (Sao Paulo State Research Support 
                         Foundation) entitled Gerac¸ao de inventarios florestais a partir 
                         de um portf ´ olio de soluc¸ ´ oes de sensoriamento remoto 
                         brasileiras de papel e celulose (Generation of forest inventories 
                         from a portfolio of Brazilian remote sensing solutions for paper 
                         and cellulose) number 2017 / 25639- 5 - NRC - PIPE Fase 2 
                         Direta.",
                  doi = "10.5194/isprs-archives-XLIII-B1-2020-107-2020",
                  url = "http://dx.doi.org/10.5194/isprs-archives-XLIII-B1-2020-107-2020",
                 issn = "0256-1840",
             language = "en",
           targetfile = "rosa_repeat.pdf",
        urlaccessdate = "28 abr. 2024"
}