Measurement of RF propagation around corners in underground mines and tunnels
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Measurement of RF propagation around corners in underground mines and tunnels

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Details:

  • Alternative Title:
    Trans Soc Min Metall Explor Inc
  • Description:
    This paper reports measurement results for radio frequency (RF) propagation around 90° corners in tunnels and underground mines, for vertically, horizontally and longitudinally polarized signals. Measurements of signal power attenuation from a main entry into a crosscut were performed at four frequencies - 455, 915, 2450 and 5800 MHz - that are common to underground radio communication systems. From the measurement data, signal power loss was determined as a function of signal coupling from the main entry into the crosscut. The resultant power loss data show there are many factors that contribute to power attenuation from a main entry into a crosscut, including frequency, antenna polarization and cross-sectional entry dimensions.
  • Source:
    Trans Soc Min Metall Explor Inc. 340(1):30-37.
  • Pubmed ID:
    28626351
  • Pubmed Central ID:
    PMC5472338
  • Document Type:
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