@Article{Pereira:2013:ImSeAu,
               author = "Pereira, Eduardo dos Santos",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Determining the fixed pattern noise of a CMOS sensor: Improving 
                         the sensibility of autonomous star trackers",
              journal = "Journal of Aerospace Technology and Management",
                 year = "2013",
               volume = "5",
               number = "2",
                pages = "217--222",
                month = "Apr.-June",
             keywords = "star trackers, aerospace systems, attitude determination, 
                         spacecraft, applied astronomy.",
             abstract = "Autonomous star trackers are optical-electronic devices used for 
                         attitude determination of artificial satellites, having as a 
                         reference for this computation the positions of stars. There is 
                         one autonomous star tracker in development at the Aerospace 
                         Electronics Division of the Brazilian National Institute for Space 
                         Research. The autonomous star tracker imager is a complementary 
                         metal-oxide-semiconductor active pixel sensor, consisting of an 
                         integrated circuit with an array of them. Each pixel has a 
                         photodetector and an active amplifier. Since it has many 
                         amplifiers, the active pixel sensor has an additional fixed 
                         pattern noise, therefore its characterization is different from 
                         the traditional method used for the charge coupled devices. With 
                         this experiment, it was observed that the mean value per columns 
                         of fixed pattern noise is ~100% greater than the mean value of the 
                         pixel one. Taking into account this result, modeling the pixel 
                         fixed pattern noise will not be important to improve the 
                         autonomous star tracker sensibility. Furthermore, the random noise 
                         value was less than 1% of the fixed pattern noise range data, 
                         being possible to estimate it. In this work, we presented the 
                         fixed pattern noise new parametric model, which has a good 
                         agreement when compared with the experimental data. It was 
                         calculated Pearson's product-moment correlation coefficient 
                         between the model and the observed data, in order to quantify the 
                         model accuracy and it was obtained 99% for flat field and 79% for 
                         dark current.",
                  doi = "10.5028/jatm.v5i2.206",
                  url = "http://dx.doi.org/10.5028/jatm.v5i2.206",
                 issn = "1984-9648",
             language = "en",
           targetfile = "206-1230-1-PB.pdf",
        urlaccessdate = "17 maio 2024"
}