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Statistics of polarisation matching

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Author: Naus, H.W.L. · Zwamborn, A.P.M.
Type:article
Date:2014
Source:IET Science, Measurement and Technology, 4, 8, 196-202
Identifier: 487084
doi: doi:10.1049/iet-smt.2013.0058
Keywords: Physics · Antennas · Polarization matching · Electromagnetic fields · Statistical methods · Stochastic analysis · Defence Research · Defence, Safety and Security · Physics & Electronics · ED - Electronic Defence · TS - Technical Sciences

Abstract

The reception of electromagnetic signals depends on the polarisation matching of the transmitting and receiving antenna. The practical matching differs from the theoretical one because of the noise deterioration of the transmitted and eventually received electromagnetic field. In other applications, the polarisation parameters of the receiving antenna are not known. Both problems are addressed by means of statistical methods, analytical as well as simulation results are obtained. The variation of the noisy matching factor depends mainly on the signal-to-noise ratio. The resulting probability distribution for the polarisation matching factor in case of a stochastic receiver is independent of the phase difference, but strongly affected by the axis ratio of the incident polarised field.