Title :
Multilevel tabulated interaction method applied to UHF propagation over irregular terrain
Author :
Brennan, Conor ; Cullen, Peter J.
Author_Institution :
Dept. of Electr. Eng., Trinity Coll., Dublin, Ireland
fDate :
10/1/1999 12:00:00 AM
Abstract :
A multilevel tabulated interaction method (TIM) is described for application to the analysis of exceptionally large two-dimensional (2-D) UHF terrain propagation problems. While standard TIM schemes offer extremely rapid solutions to terrain propagation problems on a medium to large scale (~20 km), the computation times increase quadratically with problem size. For problems of extremely large size (~100 km), we show how the adoption of the multilevel scheme proves beneficial, reducing computation times and restoring the TIMs computational advantage. Numerical results are provided illustrating the concepts introduced
Keywords :
UHF radio propagation; electric field integral equations; electromagnetic wave polarisation; 2D EFIE; 2D UHF terrain propagation problems; computation times reduction; electric field integral equation; horizontal polarization; irregular terrain; multilevel tabulated interaction method; problem size; radiowave propagation; Electromagnetic propagation; Helium; Integral equations; Large-scale systems; NIST; Solid modeling; Terrain factors; Two dimensional displays; UHF propagation; Wireless communication;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
