Near-Field Corrections to Line-of-Sight Propagation
- 1 January 1955
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IRE
- Vol. 43 (10) , 1459-1466
- https://doi.org/10.1109/jrproc.1955.277962
Abstract
This study considers the line-of-sight propagation of electromagnetic waves in a turbulent medium. Interest here centers on the received signal's phase stability. The field equation describing propagation through a region characterized by random dielectric fluctuations is first developed. Solutions of this equation which represent the scattered field are derived with ordinary perturbation theory. These solutions are next used to calculate the rms phase error for an arbitrary path in the troposphere. This approach includes both a three dimensional and near-field description for the multipath, scattered amplitudes; thereby overcoming the limitations of previous treatments. The phase correlation between signals received on two parallel transmission paths is derived last to illustrate the role of overlapping antennae beams.Keywords
This publication has 4 references indexed in Scilit:
- The Scattering of Electromagnetic Waves by Turbulent Atmospheric FluctuationsPhysical Review B, 1954
- A statistical survey of atmospheric index-of-refraction variationTransactions of the IRE Professional Group on Antennas and Propagation, 1953
- A Theory of Radio Scattering in the TroposphereProceedings of the IRE, 1950
- Propagation of Radiation in a Medium with Random InhomogeneitiesPhysical Review B, 1946