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Engineering of Computer-Based Systems, IEEE International Conference on the (2004)
Brno, Czech Republic
May 24, 2004 to May 27, 2004
ISBN: 0-7695-2125-8
pp: 121
Kumar Chhokra , Vanderbilt University
Ted Bapty , Vanderbilt University
Jason Scott , Vanderbilt University
Simon Winberg , Vanderbilt University
Janos Sztipanovits , Vanderbilt University
Don van Rheeden , Southwest Research Institute
Ben Abbott , Southwest Research Institute
In recent years, there has been an increased need for surveillance capabilities in both civilian and military arenas. Mobile unmanned sensor fleets have long been envisioned as a tool for acquiring such intelligence. This paper describes a geolocation system as a payload for unmanned aerial vehicles. In particular, we address the issues that arise in designing an inexpensive, distributed, mobile, RF sensor processing system: low payload cost; power-limited components; real-time constraints; absence of common clocks; and varying environmental conditions. We also target, qualitatively, the tradeoff decisions across the dimensions of accuracy (of time of arrival estimates and the final geolocation), computational effort, physical dimensions, and operational logistics. The final system architecture, algorithms, and accuracy figures are also described.

K. Chhokra et al., "WASP: A Radio Geolocation System on Highly Resource Constrained Mobile Platforms," Engineering of Computer-Based Systems, IEEE International Conference on the(ECBS), Brno, Czech Republic, 2004, pp. 121.
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