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Publisher: Korean Society for Internet Information, 4th Floor, Unsan Building,, 646-6 Yeoksam
1-Dong, Gangnam-Gu,, 135-911, Korea, Republic of
Abstract: In RSSI-based RFID(Radio Frequency IDentification) indoor localization system, the
signal path loss model of each sub-region is different from others in the whole localization area
due to the influence of the multi-path phenomenon and other environmental factors. Therefore,
this paper divides the localization area into many sub-regions and constructs separately the signal
path loss model of each sub-region. Then an improved LANDMARC method is proposed. Firstly,
the deployment principle of RFID readers and tags is presented for constructing localization
sub-region. Secondly, the virtual reference tags are introduced to create a virtual signal strength
space with RFID readers and real reference tags in every sub-region. Lastly, k nearest neighbor
(KNN) algorithm is used to locate the target object and an error compensating algorithm is
proposed for correcting localization result. The results in real application show that the new
method enhances the positioning accuracy to 18.2% and reduces the time cost to 30% of the
original LANDMARC method without additional tags and readers. © 2013 KSII.
Number of references: 28
Main heading: Algorithms
Controlled terms: Error compensation - Radio frequency identification (RFID)
Uncontrolled terms: Environmental factors - Indoor localization systems - Indoor
locations - K nearest neighbor algorithm - Landmarc - Positioning accuracy -
Region division - Virtual reference tags
Classification code: 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching
Theory, Programming Theory - 723 Computer Software, Data Handling and Applications -
731.1 Control Systems - 921 Mathematics
DOI: 10.3837/tiis.2013.04.004
Database: Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.
5.
Accession number: 20131916309762
Title: Large area photoconductive terahertz emitter for 1.55 μm excitation based on an InGaAs
heterostructure
Authors: Mittendorff, Martin1, 2 ; Xu, Ming1, 3 ; Dietz, Roman J. B.4 ; Künzel, Harald4 ; Sartorius,
Bernd4 ; Schneider, Harald1 ; Helm, Manfred1, 2 ; Winnerl, Stephan1/徐鸣
Author affiliation: 1 Helmholtz-Zentrum Dresden-Rossendorf, PO Box 510119, D-01314
Dresden, Germany
2 Technische Universität Dresden, D-01062 Dresden, Germany
3 Department of Applied Physics, Xi'An University of Technology, PO Box 904, Xi'an, Shaanxi,
710048, China
4 Fraunhofer Institute for Telecommunication, Heinrich-Hertz-Institute, Einsteinufer 37,
D-10587 Berlin, Germany
Source title: Nanotechnology
Abbreviated source title: Nanotechnology
Volume: 24
Issue: 21
Issue date: May 31, 2013