25 September 2007 Remote sensing with passive specular probes
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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.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dan Slater, Dan Slater, Sandy Shaw, Sandy Shaw, } "Remote sensing with passive specular probes", Proc. SPIE 6709, Free-Space Laser Communications VII, 67090W (25 September 2007); doi: 10.1117/12.734838; https://doi.org/10.1117/12.734838

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