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Proceedings Paper

Intensity Correlation Techniques For Passive Optical Device Detection
Author(s): Steven C. Gustafson
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Paper Abstract

The use of intensity correlation techniques for the detection of passive optical devices is considered. It is assumed that the devices have small angular sizes due to their large distances from the detection system, and it is assumed that the final optical apertures of the devices appear to be stationary, whereas their surroundings appear to fluctuate. This difference in apparent motion forms the basis for intensity correlation detection, which has potential advantages because of its insensitivity to phase variations due, for example, to motion of the detection system or to atmospheric turbulence. Some relationships between intensity correlation detection and certain areas in optical physics, including laser radar (lidar), intensity correlation interferometry, and speckle phenomena due to moving diffuse objects are discussed. A simple model of intensity correlation detection is developed and related to the influence of stationary coherent background illumination on the autocorrelation function in time of a coherently illuminated moving rough surface. An expression for this autocorrelation function is derived and discussed for certain elementary conditions.

Paper Details

Date Published: 8 March 1982
PDF: 5 pages
Proc. SPIE 0302, Infrared Technology for Target Detection and Classification, (8 March 1982); doi: 10.1117/12.932632
Show Author Affiliations
Steven C. Gustafson, University of Dayton Research Institute (United States)


Published in SPIE Proceedings Vol. 0302:
Infrared Technology for Target Detection and Classification
Pat M. Narendra, Editor(s)

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