NDLI: Dynamic Indoor Location Determination: Mechanisms and Robustness Evaluation

Content Provider	IEEE Xplore Digital Library
Author	Yiming Ji Lei Chen
Copyright Year	2010
Abstract	Many indoor location determination systems have been developed lately due to burgeoning demands on location based autonomous systems, however, the performance of most systems is not well understood because conditions under which reported systems were evaluated could be very different. To this date, there are still not yet many valuable evaluation studies using real measurement data sets in recent literature. In this work, we examine a set of localization mechanisms and evaluate their performance robustness under various configuration settings and dynamics using two different building environments including one regular office building and one underground floor-plan. We study both the distance-based and the database-based systems that employ only received signal strength for location determination, and propose several performance enhancement methods that would improve the robustness of common indoor systems. We introduce a simple but effective radio distortion model to capture signal perturbations under uncontrolled environments where signal values could be distorted significantly. Using the model, we also evaluate two location searching algorithms including lateration and multidimensional scaling (MDS), we observed that MDS presented stable and smaller localization errors under most experimental settings. Of systems studied in this paper, strong experimental evidence indicated that the signal-location map method, a database-based system, outperforms the distance-based systems, especially when environment is dynamic or when radio signal values are distorted intentionally.
Starting Page	70
Ending Page	77
File Size	347827
Page Count	8
File Format	PDF
ISBN	9781424459155
e-ISBN	9781424459162
DOI	10.1109/ICAS.2010.19
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-03-07
Publisher Place	Mexico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	System testing Signal Strength Multidimensional systems Dead reckoning Location Determination Distortion Mobile radio mobility management Computer science Databases Goniometers Signal Distortion Model ARIADNE Signal processing Robustness
Content Type	Text
Resource Type	Article

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