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Fast localization of radio frequency emitters using wireless sensor networks

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3 Author(s)
Batson, M.S. ; Naval Postgraduate Sch., Monterey ; McEachen, J.C. ; Tummala, M.

We investigate the use of a wireless sensor network for identifying the direction of a radio frequency (RF) transmission. Specifically, we consider the combined use of time difference of arrival (TDOA) and beamforming techniques to steer a beam in the desired direction and enhance radio frequency (RF) direction finding and follow-on signal reception. The TDOA lines-of bearing are calculated using a combination of the Cross-Ambiguity Function to calculate the actual time difference and the Newton-Raphson technique to focus the beamforming efforts. A Least Mean Squares (LMS) adaptive beamforming algorithm is then used to localize the target for further prosecution. Simulations indicate considerable improvement can be achieved using this combined method.

Published in:

Communications and Information Technologies, 2007. ISCIT '07. International Symposium on

Date of Conference:

17-19 Oct. 2007

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