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Proceedings Paper

Proposals for a computer-controlled orbital scanning camera for remote image aquisition
Author(s): Christopher O. Nwagboso
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Paper Abstract

A method is described for acquiring remote images from a reciprocating axisymmetric aircraft seal ring. The method relies on orbital scanning technique which allows a CCD camera and fiber optic probe to be positioned on azimuth plane within the 2(pi) radian of the inner circumference of the seal ring. The orbital motion which can be controlled by a computer allows the wider coverage of the seal ring surface but in incremental sector bases. The motion control which is based on a stepper motor and a CY500 controller is described. Position accuracy of the probe on the azimuth plane was analyzed. Errors were identified based on pure rotation of the probe, and also for rotation of the probe and the seal ring. Some experimental results obtained with an orbital motion of the fiber optic probe show that image acquisition is possible with the technique.

Paper Details

Date Published: 1 February 1991
PDF: 12 pages
Proc. SPIE 1454, Beam Deflection and Scanning Technologies, (1 February 1991); doi: 10.1117/12.28063
Show Author Affiliations
Christopher O. Nwagboso, Bolton Institute of Higher Education (United Kingdom)

Published in SPIE Proceedings Vol. 1454:
Beam Deflection and Scanning Technologies
Leo Beiser; Gerald F. Marshall, Editor(s)

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