On Quantification of Anchor Placement

Details On Quantification of Anchor Placement On Quantification of Anchor Placement

2012-01-12

arxiv.org/abs/1201.2474v1

Computer Science

Networking and Internet Architecture

infocom 1012

Scientific paper

This paper attempts to answer a question: for a given traversal area, how to quantify the geometric impact of anchor placement on localization performance. We present a theoretical framework for quantifying the anchor placement impact. An experimental study, as well as the field test using a UWB ranging technology, is presented. These experimental results validate the theoretical analysis. As a byproduct, we propose a two-phase localization method (TPLM) and show that TPLM outperforms the least-square method in localization accuracy by a huge margin. TPLM performs much faster than the gradient descent method and slightly better than the gradient descent method in localization accuracy. Our field test suggests that TPLM is more robust against noise than the least-square and gradient descent methods.

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