8 March 1982 Smear Compensation For A Pushbroom Scan
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Abstract
Of various concepts (both staring and scanning) which have been proposed for the detection of dim moving targets from space, many have sensitivity limitations arising from smear - induced drift which causes displacement between frames of data. A multi-fan pushbroom scan concept recently proposed by W.K. Davis has an advantage over some other scanning concepts in that the frames of data can be processed by the same high performance algorithms applicable to staring sensors. The displacements caused by smear in this technique are discussed as well as three simple techniques for eliminating the displacements. The principal technique of the three which compensates for most of the displacement is a slow controlled yaw of the spacecraft. An example is presented in which the uncorrected smear displacement is 800 m while the corrected smear displacement is 0.8m, for a smear reduction factor of 1000.
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Thomas J. Janssens, Thomas J. Janssens, Sergio F. Valdes, Sergio F. Valdes, } "Smear Compensation For A Pushbroom Scan", Proc. SPIE 0302, Infrared Technology for Target Detection and Classification, (8 March 1982); doi: 10.1117/12.932645; https://doi.org/10.1117/12.932645
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