Radio Propagation Measurements in Coal Mines at UHF and VLF

Details

• Personal Author:
  Goddard, Arthur E.
• Description:
  Radio propagation measurements were conducted in a coal mine at UHF (200 to 1000 MHz) and VLF (1 to 50 kHz) to characterize the transmission loss of intra-mine paths. The basic experimental parameters included frequency, polarization, path orientation and distance. Further tests evaluated the performance of roof-bolt vs. loop antennas at VLF and parasitic reflectors at UHF. Measurement results are summarized in a series of transmission loss curves. Examples are presented to show the use of these curves in predicting the performance of radio communication systems in mines.
• Source:
  Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 54-61
• Document Type:
  Text
• Genre:
  Conference Publications
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Pages in Document:
  p. 54-61
• NIOSHTIC Number:
  nn:20033482
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:cd2be56c456aba6b9922b38f87d769506d1901c156986953bc9ae0775c3a48767ffdfaac0ad544169728456172d21627894b6473159b537c0b431acec07785d4
• Download URL:
  https://stacks.cdc.gov/view/cdc/8809/cdc_8809_DS1.pdf
• File Type:
  [PDF - 346.24 KB ]