@InProceedings{LopesKugaFabrFerr:1997:NuReOn,
               author = "Lopes, Roberto Vieira da Fonseca and Kuga, H{\'e}lio Koiti and 
                         Fabri, Sergio Mauri and Ferreira, Luiz Danilo Damasceno",
                title = "GPS-Based Navigation Solution and Spin-Axis Attitude 
                         Determination: Numerical Results of On The Ground Experiment",
            booktitle = "Proceedings...",
                 year = "1997",
                pages = "221--225",
         organization = "International Symposium on Space Flight, 12.",
             keywords = "ENGENHARIA E TECNOLOGIA ESPACIAL, spin-axis attitude 
                         determination, GPS.",
             abstract = "In previous studies the authors applied parameter estimation 
                         procedures to satellite orbit and spin-axis attitude determination 
                         from GPS observables.This work adapts and applies those algorithms 
                         for the first time to real data from an experiment conducted at 
                         INPE in collaboration with UFPR. The experiment and the procedures 
                         are briefly presented and their numerical results shown. The 
                         attitude of a spinning bar with two offset antennas linked to 
                         independent receivers was determined from the double-difference 
                         phase observable. The solution of the integer ambiguity problem 
                         takes advantage of the antenna baseline motion. The navigation 
                         solution is performed by ORBEST algorithm, which considers C-code 
                         pseudorange from all GPS satellites at sight. The work is a 
                         preliminary step towards the in flight Brazilian experiments 
                         foreseen for the near future.",
  conference-location = "Dynamics, Germany",
      conference-year = "2-6 June 1997",
                label = "10924",
           targetfile = "1997_lopes.pdf",
        urlaccessdate = "04 jun. 2024"
}