Modeling Distance and Bandwidth Dependency of TOA-Based UWB Ranging Error for Positioning-Reference-Cited by-同舟云学术

Modeling Distance and Bandwidth Dependency of TOA-Based UWB Ranging Error for Positioning

Published:2009 Issue: Volume:2009 Page:1-4
ISSN:1687-6741
Container-title:Research Letters in Communications
language:en
Short-container-title:Research Letters in Communications

Author:

Bellusci Giovanni¹,Janssen Gerard J. M.¹,Yan Junlin²,Tiberius Christian C. J. M.²

Affiliation:

1. Wireless and Mobile Communications Group (WMC), Delft University of Technology, 2628 CD Delft, The Netherlands

2. Mathematical Geodesy and Positioning Group (MGP), Delft University of Technology, 2629 HS Delft, The Netherlands

Abstract

A statistical model for the range error provided by TOA estimation using UWB signals is given, based on UWB channel measurements between 3.1 and 10.6 GHz. The range error has been modeled as a Gaussian random variable for LOS and as a combination of a Gaussian and an exponential random variable for NLOS. The distance and bandwidth dependency of both the mean and the standard deviation of the range error has been analyzed, and insight is given in the different phenomena which affect the estimation accuracy. A possible application of the model to weighted least squares positioning is finally investigated. Noticeable improvements compared to the traditional least squares method have been obtained.

Publisher

Hindawi Limited

Link

http://downloads.hindawi.com/journals/jece/2009/468597.pdf

Reference2 articles.

1. Localization via ultra-wideband radios: a look at positioning aspects for future sensor networks

2. Modeling of the TOA-based distance measurement error using UWB indoor radio measurements

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