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Updated: May 17, 2025

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Research on Centroid Localization Method of Underground Space Ground Electrode Current Field Based on RSSI.

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This study introduces a robust underground communication system and a novel centroid localization method using received signal strength indication (RSSI) for reliable positioning in collapsed underground spaces like mines and tunnels.

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Area of Science:

  • Geophysics
  • Electrical Engineering
  • Computer Science

Background:

  • Communication and localization are critical in underground environments, especially during emergencies like collapses.
  • Traditional wireless systems struggle with signal penetration and reliability in subterranean settings.
  • Existing localization methods lack accuracy and robustness in dynamic underground conditions.

Purpose of the Study:

  • To develop a strong penetration information transmission system for underground spaces.
  • To propose an improved centroid localization method using received signal strength indication (RSSI) for enhanced accuracy and reliability.
  • To address communication interruptions and enable effective localization in collapsed underground environments.

Main Methods:

  • Analysis of ground current field signal propagation characteristics in underground spaces.
  • Construction of an attenuation model combining RSSI ranging.
  • Introduction of an improved weighted centroid localization algorithm with optimized parameters.

Main Results:

  • Achieved an average positioning error of 7.47 m in a 10,000 sq meter underground area.
  • Demonstrated a 32.32% reduction in positioning error compared to the weighted centroid localization algorithm.
  • Showcased a 62.74% reduction in positioning error compared to the traditional centroid localization algorithm.

Conclusions:

  • The proposed method offers independent underground positioning, overcoming reliance on external links.
  • This technology provides crucial support for underground life-saving operations and disaster rescue.
  • The system presents significant practical value and promising prospects for enhancing emergency response capabilities.