@InProceedings{SilvaKugaZana:2014:ExHiFi,
               author = "Silva, William Reis and Kuga, H{\'e}lio Koiti and Zanardi, Maria 
                         Cecilia Fran{\c{c}}a de Paula Santos",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal 
                         do ABC (UFABC)}",
                title = "The extended H-infinite filter for calibration and attitude 
                         determination using real data of CBERS-2 satellite",
            booktitle = "Proceedings...",
                 year = "2014",
                pages = "1--18",
         organization = "International Symposium on Space Flight Dynamics, 24. (ISSFD).",
            publisher = "Johns Hopkins - Applied Physics Laboratory",
                 note = "{Setores de Atividade: Pesquisa e desenvolvimento 
                         cient{\'{\i}}fico.}",
             keywords = "extended H-infinite filter, second order extended H-infinite 
                         filter, attitude estimation, gyros drift.",
             abstract = "This work describes the attitude and the gyros drift estimation 
                         for real satellite CBERS-2 (China Brazil Earth Resources Satellite 
                         2) using the Second-Order Extended H\∞ Filter for nonlinear 
                         systems. The attitude dynamical model is described by nonlinear 
                         equations involving the Euler angles. The attitude sensors 
                         available are two DSS (Digital Sun Sensors), two IRES (Infra-Red 
                         Earth Sensor), and one triad of mechanical gyros. The two IRES 
                         give direct measurements of roll and pitch angles with a certain 
                         level of error. The two DSS are mounted on the satellite body such 
                         that they are nonlinear functions of roll, pitch, and yaw attitude 
                         angles. Herein one proposes to use an extension of the H\∞ 
                         linear filter for the nonlinear case of attitude estimation with 
                         nonlinearity in both the dynamics and the measurement model. The 
                         aim is to highlight and magnify the properties of the H\∞ 
                         filter in terms of its favourable characteristics. The results in 
                         this work show that one can reach accuracies in attitude 
                         determination within the prescribed requirements, besides 
                         providing estimates of the gyro drifts which can be further used 
                         to enhance the gyro error model and that the Second-Order Extended 
                         H\∞ Filter is more robust than Extended Kalman Filter.",
  conference-location = "Laurel",
      conference-year = "2014",
                label = "lattes: 1786255724025154 2 SilvaKugaZana:2014:EXHIFI",
             language = "en",
                  url = "https://dnnpro.outer.jhuapl.edu/Portals/35/ISSFD24_Paper_Release/ISSFD24_Paper_S4-4_Silva.pdf",
        urlaccessdate = "03 jun. 2024"
}