@InProceedings{MadsenSilvCecaSawa:2008:CaInSo,
               author = "Madsen, Felipe Ramos Hald and Silva, Jorge Fernando Valle and 
                         Cecatto, Jos{\'e} Roberto and Sawan, Hanumant Shankar",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Calibration of interferometric solar observations using gps 
                         satellites",
            booktitle = "Anais...",
                 year = "2008",
         organization = "Reuni{\~a}o Anual da Sociedade Astron{\^o}mica Brasileira, 34.",
             abstract = "Solar interferometric data are usually not uniquely and completely 
                         calibrated due to the lack of calibrator sources with fluxes of 
                         the same order or higher than that of the Sun. On the other hand, 
                         the satellites of the Global Positioning System (GPS) can be 
                         regarded as point sources for most of the solar-observing arrays, 
                         with well known orbits and power transmitted, so that the 
                         resulting flux on Earths surface is higher than that of the Quiet 
                         Sun at 1575 MHz. Based on these, we propose a new technique that 
                         is currently under development and is presented in this work, 
                         making use of GPS satellites as calibrator sources for 
                         interferometric solar observations. We applied this calibration 
                         technique to solar observations using the prototype of the 
                         Brazilian Decimetric Array (PBDA), during the period from May to 
                         September, 2007. The results indicate that the GPS signals are 
                         adequate for calibration of very strong sources and can be applied 
                         to interferometric solar observations.",
  conference-location = "Passa Quatro, MG",
      conference-year = "7 a 11 set.",
                label = "self-archiving-INPE-MCTIC-GOV-BR",
             language = "pt",
           targetfile = "Madsen_calibration.pdf",
        urlaccessdate = "07 maio 2024"
}