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Proceedings Paper

Digital optical tags for national security (Invited Paper)
Author(s): Stephen P. Griggs; Martin B. Mark; Barry J. Feldman
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Paper Abstract

The DARPA Dynamic Optical Tags (DOTs) program has as its goal the development of a low cost, small, robust, persistent, low probability of intercept, 2-way tagging, tracking, and locating device that also supports error free data rates in excess of 100 kbps and can be interrogated at ranges up to and beyond 1Km. The program has selected several promising candidates for this device and is in the process of evaluating individually their performance against predetermined milestones to ascertain whether the technology is feasible and the program should continue for further development. In all cases the candidate devices operate as retro-reflecting optical modulators. Upon interrogation by a laser at the correct wavelength and with the correct code, the tags will proceed to modulate the return retro-reflection. While data for the candidate devices are not yet in hand, nevertheless this paper will provide an overview of the nature of the devices under investigation and speculate on how these devices could be employed for both national security applications.

Paper Details

Date Published: 20 May 2005
PDF: 10 pages
Proc. SPIE 5778, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense IV, (20 May 2005); doi: 10.1117/12.606506
Show Author Affiliations
Stephen P. Griggs, DARPA (United States)
Martin B. Mark, Science Applications International Corp. (United States)
Barry J. Feldman, System Planning Corp. (United States)


Published in SPIE Proceedings Vol. 5778:
Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense IV
Edward M. Carapezza, Editor(s)

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