Implementation of Indoor Positioning Systems in NLOS Environment for Emergency Rescue 


Vol. 46,  No. 7, pp. 1199-1207, Jul.  2021
10.7840/kics.2021.46.7.1199


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  Abstract

In this paper, we implemented an indoor positioning system with IR-UWB technology to measure the exact location of personnel operating inside the building in the event of a building fire or counterterrorism situation. Unlike conventional methods used mainly in line-of-sight environments, this paper shows that IR-UWB technology can be utilized in non-line-of-sight environment by installing base stations outside the building and operating mobile units inside the building. We installed a RF amplifier and a high gain antenna in the base station and the mobile unit in order to allow that IR-UWB signals are transmitted indoors through the building’s exterior and interior walls, and central station calculated the location of the mobile unit through signal processing. The implemented system was tested for operation by conducting outdoor experiments in an environment similar to the actual building, and identified the moving trajectory and position errors of the mobile unit. Through experiments, it was verified that we could estimate and track the location of the mobile unit even if multiple base stations and mobile units perform IR-UWB communication in non-line-of-sight environment and IR-UWB can be used for indoor positioning systems.

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  Cite this article

[IEEE Style]

C. Lee, J. Lim, S. Jung, D. Seol, S. Lee, "Implementation of Indoor Positioning Systems in NLOS Environment for Emergency Rescue," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 7, pp. 1199-1207, 2021. DOI: 10.7840/kics.2021.46.7.1199.

[ACM Style]

Chul-Soo Lee, Jaewook Lim, Sunghun Jung, Dong-Min Seol, and Sangbeom Lee. 2021. Implementation of Indoor Positioning Systems in NLOS Environment for Emergency Rescue. The Journal of Korean Institute of Communications and Information Sciences, 46, 7, (2021), 1199-1207. DOI: 10.7840/kics.2021.46.7.1199.

[KICS Style]

Chul-Soo Lee, Jaewook Lim, Sunghun Jung, Dong-Min Seol, Sangbeom Lee, "Implementation of Indoor Positioning Systems in NLOS Environment for Emergency Rescue," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 7, pp. 1199-1207, 7. 2021. (https://doi.org/10.7840/kics.2021.46.7.1199)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880