VHF field strength measurements in mountainous terrain study of reflection effects

  • B.L.N. Rao Defence Research Laboratory, Landour Cantt, Mussoorie
  • B. K. Roys Defence Research Laboratory, Landour Cantt, Mussoorie
  • H. B. Mathur Defence Research Laboratory, Landour Cantt, Mussoorie
  • U. C. Gupta Defence Research Laboratory, Landour Cantt, Mussoorie
Keywords: Antenna, Reflection

Abstract

Effects of reflection on the field strength of very high frequency radio-waves in mountain us terrain have been studied. Experiment on diffraction paths in mountainous area were made at 126 Mc/by varying antenna height from 1.8mtp 3.75m for both vertically and horizontally polarised waves. The results showed no significant reflection effects as there were no maxima and minima in received field strength with variation of antenna height.It has been concluded that reflection effects can be neglected for many practical purposes of communication over short distances in mountainous terrain area having considerable vegetation over the path.
Published
2014-05-09
How to Cite
RaoB., RoysB., MathurH., & GuptaU. (2014). VHF field strength measurements in mountainous terrain study of reflection effects. Defence Science Journal, 14(3), 241-246. https://doi.org/10.14429/dsj.14.7156
Section
Research Papers

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