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Optical Engineering

Advantages Of Hexagonal Detectors And Variable Focus For Point-Source Sensors
Author(s): J. Allen Cox
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Paper Abstract

Analytical results are presented showing improved detection and location performance of point sources in a staring sensor using a hexagonal detector array or having the capability to adjust the size of its blur spot (variable focus). Square and hexagonal detector arrays are compared for detection probability versus focus, for location accuracy versus focus and signal-to-noise ratio, and for location accuracy versus blur size and detector array fill factor. We find that hexagonal detectors provide better detection probability when the point source lies near a corner of the detector, but otherwise the two detector types give comparable performance. Hexagonal detectors generally give better location accuracy than square detectors. Variable focus is shown to be advantageous for maximizing performance for both detection and location of point sources.

Paper Details

Date Published: 1 November 1989
PDF: 6 pages
Opt. Eng. 28(11) doi: 10.1117/12.7977111
Published in: Optical Engineering Volume 28, Issue 11
Show Author Affiliations
J. Allen Cox, Honeywell Systems and Research Center (United States)


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