Summary Technical Report of the Committee on Propagation, NDRC.: The propagation of radio waves through the standard atmosphere
27 pages matching reflection coefficient in this book
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antenna height approximately array assumed calculation Chapter contour corresponding coverage diagram curvature curve decibels dielectric constant dielectric earth diffraction region distance divergence factor doublet doublet antenna effect elevation equal field strength Figure 15 formula free space free-space field frequency Fresnel zones gain factor given in Figure gives grazing angle ground ground constants half-wave dipole horizontal polarization impedance input length line of sight lobe maxima low antennas maximum range meters method mode NDRC noise figure obtained optical region parameter path difference permanent echoes phase shift plane earth problem radar cross section radar gain radiation field radiation pattern radio gain radius ratio reactance receiver height receiving antenna reflected rays reflection coefficient reflection point reflector refractive index scattering sea water shown in Figure signal sin2 spherical earth surface Table target tion transmission transmitter height versus vertical polarization wavelength zero