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Proceedings Paper

Smear Compensation For A Pushbroom Scan
Author(s): Thomas J. Janssens; Sergio F. Valdes
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Paper 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.

Paper Details

Date Published: 31 March 1982
PDF: 7 pages
Proc. SPIE 0304, Modern Utilization of Infrared Technology VII, (31 March 1982); doi: 10.1117/12.932673
Show Author Affiliations
Thomas J. Janssens, The Aerospace Corporation (United States)
Sergio F. Valdes, The Aerospace Corporation (United States)

Published in SPIE Proceedings Vol. 0304:
Modern Utilization of Infrared Technology VII
Irving J. Spiro, Editor(s)

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