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Removing Systematic Error in Node Localization Using Scalable Data Fusion

Beigl, Michael and Hazas, Michael and Krohn, Albert (2007) Removing Systematic Error in Node Localization Using Scalable Data Fusion. In: Fourth European Workshop on Wireless Sensor Networks (EWSN 2007), 2007-01-292007-01-31, Delft, The Netherlands.

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    Abstract

    Methods for node localisation in sensor networks usually rely upon the measurement of received strength, time-of-arrival, and/or angle-of-arrival of an incoming signal. In this paper, we propose a method for achieving higher accuracy by combining redundant measurements taken by different nodes. This method is aimed at compensating for the systematic errors which are dependent on the specific nodes used, as well as their spatial configuration. Utilising a technique for data fusion on the physical layer, the time complexity of the method is constant and independent of the number of participating nodes. Thus, adding more nodes generally increases accuracy but does not require additional time to report measurement results. Our data analysis and simulation models are based on extensive experiments with real ultrasound positioning hardware. The simulations show that the ninety-fifth percentile positioning error can be improved by a factor of three for a network of fifty nodes.

    Item Type: Conference or Workshop Item (Paper)
    Journal or Publication Title: Fourth European Workshop on Wireless Sensor Networks (EWSN 2007)
    Uncontrolled Keywords: cs_eprint_id ; 1394 cs_uid ; 1
    Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
    Departments: Faculty of Science and Technology > School of Computing & Communications
    ID Code: 12920
    Deposited By: ep_importer_comp
    Deposited On: 26 Jun 2008 15:44
    Refereed?: Yes
    Published?: Published
    Last Modified: 27 Jul 2012 01:56
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/12920

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