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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 18 — Jun. 20, 2012
  • pp: 4139–4150

Target detection with randomized thresholds for lidar applications

Steven E. Johnson  »View Author Affiliations


Applied Optics, Vol. 51, Issue 18, pp. 4139-4150 (2012)
http://dx.doi.org/10.1364/AO.51.004139


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Abstract

Light detection and ranging (lidar) systems use binary hypothesis tests to detect the presence of a target in a range interval. For systems that count photon detections, hypothesis test thresholds are normally set so that a target detection is declared if the number of detections exceeds a particular number. When this method is employed, the false alarm probability can not be selected arbitrarily. In this paper, a hypothesis test that uses randomized thresholds is described. This randomized method of thresholding allows lidar operation at any false alarm probability. When there is a maximum allowable false alarm probability, the hypothesis test that uses randomized thresholds generally produces higher target detection probabilities than the conventional (nonrandom) hypothesis test.

© 2012 Optical Society of America

OCIS Codes
(030.5260) Coherence and statistical optics : Photon counting
(030.5290) Coherence and statistical optics : Photon statistics
(280.3640) Remote sensing and sensors : Lidar
(040.1345) Detectors : Avalanche photodiodes (APDs)

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: February 15, 2012
Manuscript Accepted: April 10, 2012
Published: June 15, 2012

Citation
Steven E. Johnson, "Target detection with randomized thresholds for lidar applications," Appl. Opt. 51, 4139-4150 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-18-4139

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