Radio ScienceAmerican Geophysical Union, 1968 - Radio meteorology |
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Common terms and phrases
admittance amplitude angle of arrival antenna gain aperture approximation asymptotic backscattering calculated Cape Cod caustic surface Cheyenne Mountain computed Crombie cusp cycle losses dipole Doppler Doppler effect drill holes effect electric field elevation angle expressions Ez(a field intensities focusing gain free-space loss frequency geomagnetic equator geomagnetic latitude given Green's functions group velocity horizontal IEEE Trans integral ionosphere log A₁ Lower Hutt measurements medium mhos/m mode conversion mutual impedance NLK/NPG noise amplitude observed obtained parameter perfectly conducting phase error Phys plane wave polarization propagation path r-vt radiation RADIO SCIENCE radius reflection refractive index rock s˛ sin˛ Scattering and absorption shadow line shown in figure signal levels slightly rough surface spectral sunrise theoretical theory Thevenin equivalent circuit through-the-rock tilt tion transmission transmitter Tsao up-over-and-down values variation vector vertical VLF propagation Vn˛ wavelength