Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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AoA-Based Local Positioning System Using a Time-Modulated Array

  • Baik, Kyung-Jin (Department of Electrical Engineering, Kookmin University) ;
  • Lee, Sangjoon (Department of Electrical Engineering, Kookmin University) ;
  • Jang, Byung-Jun (Department of Electrical Engineering, Kookmin University)
  • Received : 2017.08.31
  • Accepted : 2017.10.17
  • Published : 2017.10.31
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Abstract

In this paper, we propose an angle-of-arrival (AoA)-based local positioning system using a time-modulated array (TMA). The proposed system can determine a two-dimensional position using only two TMAs without any synchronization between the two receivers. The hardware for the proposed system consists of two commercial monopole antennas, a self-designed switch, and a well-known software-defined radio receiver. Furthermore, the location can be simply estimated in real time without the need for complicated positioning algorithms such as the MUSIC and ESPRIT algorithms. In order to evaluate the performance of our system, we estimated the position of the wireless node in an office environment. The position was estimated with a mean error of less than 0.1 m. We therefore believe that our system is appropriate for various wireless local positioning applications.

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References

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