Title :
A terrain parabolic equation model for propagation in the troposphere
Author :
Barrios, Amalia E.
Author_Institution :
Div. of Res. & Dev., Test & Evaluation, Naval Command, Control & Ocean Surveillance Center, San Diego, CA, USA
fDate :
1/1/1994 12:00:00 AM
Abstract :
A method to model tropospheric radiowave propagation over land in the presence of range-dependent refractivity is presented. The terrain parabolic equation model (TPEM), is based on the split-step Fourier algorithm to solve the parabolic wave equation, which has been shown to be numerically efficient. Comparisons between TPEM, other terrain models (SEKE, GTD, FDPEM), and experimental data show predominantly excellent agreement. TPEM is also compared to results from an experiment in the Arizona desert in which range-dependent refractive conditions were measured. Although horizontal polarization is used in the implementation of the model, vertical polarization is also discussed
Keywords :
electromagnetic wave polarisation; electromagnetic wave refraction; fast Fourier transforms; radiowave propagation; refractive index; tropospheric electromagnetic wave propagation; wave equations; Arizona desert; TPEM; experimental data; horizontal polarization; land; parabolic wave equation; range-dependent refractivity; split-step Fourier algorithm; terrain model; terrain parabolic equation model; troposphere; tropospheric radiowave propagation; vertical polarization; Atmospheric modeling; Earth; Equations; Finite difference methods; Geometrical optics; Optical diffraction; Optical reflection; Propagation losses; Solid modeling; Terrestrial atmosphere;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
