@InProceedings{MortariFialLock:2016:StCeFr,
               author = "Mortari, Daniele and Fialho, Marcio Afonso Arimura and Lockhart, 
                         A.",
          affiliation = "{Texas A\&M University} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {NASA - Johnson Space Center}",
                title = "Star centroid on the f-radius sphere using von mises-fisher 
                         probability distribution",
                 year = "2016",
         organization = "AAS/AIAA Space Flight Mechanics Meeting, 26.",
             abstract = "This paper proposes a method to perform star centroid for star 
                         trackers using small focal length or large CCD or CMOS imagers. 
                         The stars light on the imager on these trackers are affected by 
                         gnomonic distortion and classic approach to perform centroid are 
                         not accurate. By mapping the gray tones and areas of the pixels 
                         into a fictitious sphere of focal length radius and using the von 
                         MisesFisher probability distribution, a more accurate star 
                         centroid can be obtained and, consequently, a more accurate 
                         attitude estimation.",
  conference-location = "Napa, CA",
      conference-year = "14-18 Feb.",
             language = "en",
        urlaccessdate = "28 abr. 2024"
}