@InProceedings{OliveiraAdamBlanPére:2015:ExPrRe,
               author = "Oliveira, Afonso Henrique Moraes and Adami, Marcos and Blanco, 
                         Marco Antonio V{\'a}zquez and P{\'e}rez, Jos{\'e} Ram{\'o}n 
                         Rodr{\'{\i}}guez",
          affiliation = "{} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Exatid{\~a}o e precis{\~a}o de receptores GNSS em ambientes 
                         florestais",
            booktitle = "Anais...",
                 year = "2015",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "5935--5942",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 17. (SBSR)",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             abstract = "Studies using GNSS receptors (Global Navigation Satellite System) 
                         grew a lot in the last few years. The system makes many tasks 
                         easier, such as: work constructions and plots; topographic land 
                         surveys and machinery guide. It has many applications in the 
                         forest and agricultural fields and it is necessary to know the 
                         influence that the forest is causing and the exactly time of the 
                         data capture. In forest environments, the satellites sign suffers 
                         direct interference from the arboreal cover, decreasing the 
                         accuracy and precision of the positioning as the receptors suffers 
                         interference from the components of the forest that is above where 
                         it operates The aim of this study is to estimate the accuracy and 
                         precision that can be obtained in measures using GNSS receptors, 
                         as well as determine the ideal time to obtain a precise 
                         measurement of the tree specie Populus sp. A double frequency GNSS 
                         receptor positioned in each study point was used to get the static 
                         mode observed. After that, a comparison of each registered 
                         position with a known position receptor was made, obtaining 
                         accuracy. From 12 Hs (nomenclature used for the same was Hi, with 
                         i representing the portion of numbers) the higher variation in the 
                         accuracy was suffered by Hs 37, 38 39, this receptor worked in a 
                         site with a heavier forest cover where the trees are mature and 
                         with a higher number of leaves, which means, the error was 
                         occasioned by the forest cover. The ideal time to capture the data 
                         was also analyzed.",
  conference-location = "Jo{\~a}o Pessoa",
      conference-year = "25-29 abr. 2015",
                 isbn = "978-85-17-0076-8",
                label = "1225",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3JM4EQU",
                  url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3JM4EQU",
           targetfile = "p1225.pdf",
                 type = "Geoprocessamento e aplica{\c{c}}{\~o}es",
        urlaccessdate = "27 abr. 2024"
}