Ecolocation: A Sequence Based Technique for RF Localization in Wireless Sensor Networks
by Kiran Yedavalli, Bhaskar Krishnamachari, Sharmila Ravula, Bhaskar Srinivasan
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| url: | http://ceng.usc.edu/~bkrishna/research/papers/ecolocationIPSN05.pdf | | abstract: | In this paper we present a novel sequence-based RF localization
algorithm called Ecolocation. Our algorithm determines the
location of unknown nodes by examining the ordered sequence of received
signal strength (RSS) measurements taken at multiple reference nodes.
We employ a constraint-based approach that provides for robust location
decoding even in the presence of random RSS fluctuations due to multipath
fading and shadowing. Through extensive systematic simulations,
and a representative set of real mote experiments, we show that over a
wide range of settings Ecolocation performs better than other state of
the art approaches in terms of localization accuracy and precision. |
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