@Article{GomesPradKuga:2010:ReTiOr,
               author = "Gomes, Vivian Martins and Prado, Antonio F B A and Kuga, Helio 
                         Koiti",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Real time orbit determination with different force fields",
              journal = "WSEAS Transactions on Applied and Theoretical Mechanics",
                 year = "2010",
               volume = "5",
               number = "1",
                pages = "23--32",
                month = "Jan.",
                 note = "{Setores de Atividade: Pesquisa e desenvolvimento 
                         cient{\'{\i}}fico.}",
             keywords = "Geodetic satellites - Astrophysics - Global positioning system - 
                         Kalman filters - Radio navigation - Signal processing - Sun.",
             abstract = "The Global Positioning System (GPS) is a satellite navigation 
                         system that allows the users to determine 3D positioning and the 
                         time with high precision. Its main purposes are: aid to 
                         radionavigation in three dimensions with high precision 
                         positioning, navigation in real time, time synchronization, global 
                         coverage and quick acquisition of data signal sent by the GPS 
                         satellites. In this work, it is proposed to estimate, in real 
                         time, an orbital state vector composed by position, velocity, bias 
                         and drift of the GPS receiver clock on board satellites by 
                         processing the raw navigation solution obtained by the on-board 
                         receiver. In this work the Kalman filter is used to estimate the 
                         state vector based on the stepwise incoming navigation solution 
                         from the receiver. The Kalman filter is used due to its robustness 
                         in real time applications, without unnecessary storage of 
                         observations, as they can be processed while being collected. The 
                         filter dynamic model includes perturbation due to geopotential, 
                         solar radiation pressure and perturbations due to the Sun and the 
                         Moon and the observations are the raw navigation solution composed 
                         of position and receiver clock bias. Simulations and tests are 
                         done using actual data from TOPEX/POSEIDON satellite. For 
                         performance assessment, a comparison is done between the estimated 
                         state vector and the precise orbit ephemeris (POE) produced by 
                         JPL/NASA.",
                 issn = "1991-8747",
                label = "lattes: 1786255724025154 3 GomesPradKuga:2010:ReTiOr",
             language = "en",
           targetfile = "89-141.pdf",
                  url = "http://www.worldses.org/journals/mechanics/mechanics-2010.htm",
        urlaccessdate = "03 maio 2024"
}