An Analysis of Radio-wave Scattering in the Diffraction Region |
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50 miles analysis antenna elevations antennas are raised Appendix approximate height-function Booker Chapter consider constant contours curves decrease determined dielectric constant diffracted field diffraction distance diffraction region Diffraction-Scattering distances and bandwidth diversity distances Domb and Pryce element of volume equation evaluated exponential Exponential Integrals expression Figure first-mode free-space power function of height Gordon height h height-gain horizon distance horizon planes increases integral investigation law of sines limit lit region magnitude maximum negligible obtain Pac/Po parameters PL/Ps plotted Poc/Po in db point Q power scattered PR/Po quantity R₁ received power relative to free-space Scattered Power scattering angle scattering coefficient scattering volume Single-Diffraction Region single-diffraction zones slab of unit solid angle specified spherical earth total path length total shadow region total shadow zone transmitter and receiver turbulence U₁˛(Z unit height unity valid values Volume Element wavelength width σαν