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Proceedings Paper

Target velocity measurements from speckled images
Author(s): Steve E. Watkins; Rathnakar Gopisetty; Sean J. Bentley; Richard A. Anderson
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Paper Abstract

The transverse component of velocity for a moving laser-illuminated target is determined using computer image processing. Active imaging is employed in which the target is coherently illuminated producing a speckled image in the pupil plane of a CCD array. Multiple image scans are recorded following the same procedure used to retrieve the incoherent target image. This data is electronically processed to produce an interference pattern dependent upon the distance traveled between image scans. The velocity component transverse to the line of sight of the system is calculated using the distance traveled and time elapsed between scans. The axial component of velocity is shown to reduce the visibility of the interference pattern.

Paper Details

Date Published: 30 September 1994
PDF: 10 pages
Proc. SPIE 2302, Image Reconstruction and Restoration, (30 September 1994); doi: 10.1117/12.188055
Show Author Affiliations
Steve E. Watkins, Univ. of Missouri/Rolla (United States)
Rathnakar Gopisetty, Univ. of Missouri/Rolla (United States)
Sean J. Bentley, Univ. of Missouri/Rolla (United States)
Richard A. Anderson, Univ. of Missouri/Rolla (United States)


Published in SPIE Proceedings Vol. 2302:
Image Reconstruction and Restoration
Timothy J. Schulz; Donald L. Snyder, Editor(s)

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