Definition of ground reflection coefficient in phased.Tworaychannel
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Dominic Ruh
le 12 Oct 2018
Modifié(e) : Dominic Ruh
le 15 Oct 2018
Hello,
assuming the propagation of a purely vertical polarised FMCW radar uses the phased.TwoRayChannel. Is it correct to calculate the ground reflection coefficient used by the phased.TwoRayChannel property: GroundReflectionCoefficient as
Gamma_v = epsilon_r * sind(tgt_ang) - sqrt(epsilon_r - cosd(tgt_ang).^2)./ ... (epsilon_r * sind(tgt_ang)+ sqrt(epsilon_r - cosd(tgt_ang).^2));
where tgt_ang reflects the grazing angle (90°-angle of incidence) calculated by Matlabs rangeangle function? Since the E-Fields are vertically polarized only I do not want to start using polarization throughout my simulation.
Thank you! Dominic
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Honglei Chen
le 12 Oct 2018
This is a valid equation and it could work. Since this is for parallel incidence, i.e., the signal is in the incidence plane, you want to make sure that your signal satisfy that requirement.
HTH
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