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An Effective TOA-based Localization Method with Adaptive Bias Computation
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  • Journal title : Journal of IKEEE
  • Volume 20, Issue 1,  2016, pp.1-8
  • Publisher : Institude of Korean Electrical and Electronics Engineers
  • DOI : 10.7471/ikeee.2016.20.1.001
 Title & Authors
An Effective TOA-based Localization Method with Adaptive Bias Computation
Go, Seung-Ryeol;
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 Abstract
In this paper, we propose an effective time-of-arrival (TOA)-based localization method with adaptive bias computation in indoor environments. The goal of the localization is to estimate an accurate target's location in wireless localization system. However, in indoor environments, non-line-of-sight (NLOS) errors block the signal propagation between target device and base station. The NLOS errors have significant effects on ranging between two devices for wireless localization. In TOA-based localization, finding the target's location inside the overlapped area in the TOA-circles is difficult. We present an effective localization method using compensated distance with adaptive bias computation. The proposed method is possible for the target's location to estimate an accurate location in the overlapped area using the measured distances with subtracted adaptive bias. Through localization experiments in indoor environments, estimation error is reduced comparing to the conventional localization methods.
 Keywords
Wireless Localization;Time-of-Arrival (TOA);Non-Line-of-Sight (NLOS) errors;Adaptive Bias Computation;Wireless Sensor Networks;
 Language
English
 Cited by
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