11 November 1996 Distortion calibration of the MISR linear detectors
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Abstract
The multi-angle imaging spectro-radiometer (MISR) instrument, which is scheduled to fly on the EOS AM1 platform, contains nine refractive cameras (four different lens designs) at preselected view angles which image in the push broom mode. Each focal plane contains four charge coupled device (CCD) line arrays consisting of 1504 active pixels; each array is preceded by one of the MISR spectral filters. In order to facilitate registration of the data generated by the 36 arrays during the initial phase of the mission, the crosstrack pointing angle of each pixel in each array was measured in the laboratory at the camera subsystem level. These measurements were particularly challenging because the pixels had to be calibrated under flight conditions (in a vacuum over the temperature range 0 to 10 degrees Celsius) to an accuracy of 1/8 pixel or 2.6 micrometer. Given the first order properties of the various lenses, this requirement implies that the distortion had to be calibrated to better than 10 arcsec. This paper will discusses the hardware and software techniques utilized to accomplish this stringent calibration.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert P. Korechoff, Robert P. Korechoff, Daniel M. Kirby, Daniel M. Kirby, Eric B. Hochberg, Eric B. Hochberg, Cesar A. Sepulveda, Cesar A. Sepulveda, Veljko M. Jovanovic, Veljko M. Jovanovic, } "Distortion calibration of the MISR linear detectors", Proc. SPIE 2820, Earth Observing System, (11 November 1996); doi: 10.1117/12.258099; https://doi.org/10.1117/12.258099
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