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Radiometric Calibration and SNR Calculation of a SWIR Imaging Telescope

Yilmaz, Ozgur; Turk, Fethi; Selimoglu, Ozgur


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  <dc:creator>Yilmaz, Ozgur</dc:creator>
  <dc:creator>Turk, Fethi</dc:creator>
  <dc:creator>Selimoglu, Ozgur</dc:creator>
  <dc:date>2012-01-01</dc:date>
  <dc:description>Radiometric calibration of an imaging telescope is usually made using a uniform illumination sphere in a laboratory. In this study, we used the open-sky images taken during bright day conditions to calibrate our telescope. We found a dark signal offset value and a linear response coefficient value for each pixel by using three different algorithms. Then we applied these coefficients to the taken images, and considerably lowered the image non-uniformity. Calibration can be repeated during the operation of telescope with an object that has better uniformity than open-sky. Also SNR (Signal to Noise Ratio) of each pixel was calculated from the open-sky images using the temporal mean and standard deviations. It is found that SNR is greater than 80 for all pixels even at low light levels.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/104459</dc:identifier>
  <dc:identifier>oai:zenodo.org:104459</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:title>Radiometric Calibration and SNR Calculation of a SWIR Imaging Telescope</dc:title>
  <dc:type>info:eu-repo/semantics/conferencePaper</dc:type>
  <dc:type>publication-conferencepaper</dc:type>
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