Effects of roofing materials on Navaids wave polarization at constant angle
Figure show that iron and clay have the highest horizontal polarization response. It means that horizontally polarized Navaids signals are better propagated via iron and clay than other roofing materials. The figure further shows that vertically polarized signals are better propagated in plastic and clay than in any other material. It also shows that circularly polarized signals are best propagated in plastic roofing materials than all the rest. However the figure does not provide evidence about significant differences between these materials. When assuming that the effect of angle of incidence is constant, the ANOVAs 2-factor analysis results showed that Fcrit> F-value and the range of P-value is 0.05<P<0.95 for a 2-tailed test when polarization columns were considered. This implies that there is sufficient evidence to state that the three polarization methods do not have a significant difference. However there is evidence to show that at least one pair of the material types differ. Which particular pairs differ remains the same as deduced in section 4.1 since it had been shown here that the horizontal polarization used has no significant difference from the other polarizations. See appendix C for statistical analysis.
Effects of angle of
incidence on wave polarization
