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Applied Optics

Applied Optics


  • Vol. 37, Iss. 3 — Jan. 20, 1998
  • pp: 565–572

Off the line-of-sight laser radar

Kannan Krishnaswami and Michael Tilleman  »View Author Affiliations

Applied Optics, Vol. 37, Issue 3, pp. 565-572 (1998)

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The results of field and laboratory experiments of a novel laser radar (ladar) are presented. This ladar was designed to detect objects off the line of sight by deploying a fiber-optic relay between the launch and probe sites by monitoring the retroreflected signals. The apparatus incorporates a pulsed diode laser emitting at 1.55 μm, a wavelength that is ideal for eye safety and bears minimum loss in silica fibers. With its immediate application in transportation safety, the system issues a warning within a millisecond of detecting an obstacle in the path of a vehicle. The results of the field experiments yield signal-to-noise ratios high enough to trigger reliably an alarm with a probability of greater than 0.999 for detecting an obstacle and less than 10-12 probability of false alarms.

© 1998 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(140.3460) Lasers and laser optics : Lasers
(280.5600) Remote sensing and sensors : Radar

Original Manuscript: June 9, 1997
Published: January 20, 1998

Kannan Krishnaswami and Michael Tilleman, "Off the line-of-sight laser radar," Appl. Opt. 37, 565-572 (1998)

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