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Adaptive AOA-aided TOA self-positioning for mobile wireless sensor networks.

Chih-Yu Wen1, Fu-Kai Chan

  • 1Department of Electrical Engineering, Graduate Institute of Communication Engineering, National Chung Hsing University, Taichung 402, Taiwan. cwen@dragon.nchu.edu.tw

Sensors (Basel, Switzerland)
|December 14, 2011
PubMed
Summary

This study introduces a new method for mobile sensor localization in wireless networks using time and angle of arrival data. The approach enhances positioning accuracy and adaptability for network-based positioning systems.

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Area of Science:

  • Wireless Sensor Networks
  • Localization and Positioning

Background:

  • Location-awareness is critical for many wireless sensor network (WSN) applications.
  • Accurate localization of mobile sensors is a persistent challenge.

Purpose of the Study:

  • To develop an efficient and principled approach for mobile sensor localization.
  • To utilize Time of Arrival (TOA) and Angle of Arrival (AOA) data for improved positioning.

Main Methods:

  • A network-based positioning system using multiple seed broadcasts.
  • A three-phase localization scheme: AOA-aided TOA measurement, particle filter-based geometrical positioning, and adaptive fuzzy control.
  • Employing mobile target sensors to automatically obtain observations and localize themselves.

Main Results:

Keywords:
adaptive positioningfuzzy controlparticle filterwireless sensor networks

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Last Updated: May 26, 2026

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  • The proposed scheme demonstrates adaptive flexibility in location estimation.
  • Robust improvements in position estimation accuracy were observed in simulations.
  • Successful localization of mobile sensors using TOA and AOA information in line-of-sight scenarios.

Conclusions:

  • The developed positioning scheme offers a robust and adaptive solution for mobile sensor localization in WSNs.
  • The integration of AOA-aided TOA, particle filters, and fuzzy control enhances localization performance.
  • This method provides a reliable approach for automatic self-localization of mobile sensors.