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Proceedings Paper

Remote sensing with passive specular probes
Author(s): Dan Slater; Sandy Shaw
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Paper Abstract

A solar illuminated glinting specular object can serve as an in situ sensor probe that is observable from long distances. Retroreflective objects produce bright glints when illuminated by coaxial illumination sources such as lasers. These glints are modulated in various ways by illumination source variances, the local probe environment, the intervening propagation paths and the remote sensing system. The modulating signals can be recovered by using reflectivity detectors with temporal, spatial, wavelength, directivity and polarization sensitivity. Clustered and moving specular probes provide additional information through geometry extraction, beam forming and multisensor noise reduction. Experimental results are shown for omnidirectional specular imaging, atmospheric wake turbulence measurement, redeye sensing and acoustic sensing.

Paper Details

Date Published: 25 September 2007
PDF: 13 pages
Proc. SPIE 6709, Free-Space Laser Communications VII, 67090W (25 September 2007); doi: 10.1117/12.734838
Show Author Affiliations
Dan Slater, Nearfield Systems Inc. (United States)
Sandy Shaw, Nearfield Systems Inc. (United States)


Published in SPIE Proceedings Vol. 6709:
Free-Space Laser Communications VII
Arun K. Majumdar; Christopher C. Davis, Editor(s)

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