@InProceedings{RicciCarr:1994:AtErDu,
               author = "Ricci, M{\'a}rio C{\'e}sar and Carrara, Valdemir",
                title = "Atitude errors due to misalignments in conical scanning erath 
                         sensors",
            booktitle = "Resumos...",
                 year = "1994",
         organization = "Simp{\'o}sio Brasileiro de Tecnologia Aerospacial, 2.",
             keywords = "ENGENHARIA E TECNOLOGIA ESPACIAL, misalignmentattitude errors.",
             abstract = "Infrared horizon sensors are accurate instruments employed in 
                         satellites for Earth referred sensing and attitude control. These 
                         optical devices are affected in accuracy by several sources of 
                         errors. One of these sources, namely the misalignment between the 
                         rotating axis and the optical axis of a conical scanning horizon 
                         sensor, has been mentioned in the literature but hasn't being 
                         studied in sufficient detail. This paper aims to model and to 
                         study such a misalignment. The operation principle of a typical 
                         conical scanner in a low Earth sunsynchronous orbit is described 
                         as much as the mathematical modeling of the misalignment and the 
                         simulation procedure. Numerical simulations are presented and they 
                         show that the magnitude of the errors vary with orbital parameters 
                         and the sensor position with respect to the spacecraft. These 
                         simulations also show that the attitude errors are small for 
                         ordinary misalignments. Results for two sensor heads are also 
                         shown.",
  conference-location = "Sao Jose dos Campos, BR",
      conference-year = "17-21 out. 1994",
                label = "11196",
        urlaccessdate = "06 maio 2024"
}