Methods and systems for target detection
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United States of America Patent
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Feb 18, 2014
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N/A
app pub date -
Feb 17, 2011
filing date -
Feb 17, 2011
priority date (Note) -
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Abstract
Various aspects of the disclosure provide a target system that is small and low power. In one embodiment, the target system transmits an intensity modulated light beam to a target (which may be tagged with a fluorescent taggant), collects the resulting return light from the target, and separates out elastic light scatter and fluorescent light in the collected light. The intensities of the elastic light scatter and the fluorescent light are then separately detected by first and second photodetectors, respectively. The first photodetector generates an elastic scatter detection signal based on the detected elastic light scatter and the second photodetector generates a fluorescent detection signal based on the detected fluorescent light. The elastic scatter detection signal and/or the fluorescent detection signal are used to provide one or more of the following functions: 1) target detection, 2) range determination, 3) taggant detection, and 4) taggant discrimination/confirmation.
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