Title :
Examination of existent propagation models over large inhomogeneous terrain profiles using fast integral equation solution
Author :
Tunc, Celal Alp ; Altintas, Ayhan ; Ertürk, Vakur B.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara, Turkey
Abstract :
The accuracy of most widely used empirical models are investigated using the spectrally accelerated forward-backward (FBSA) method as a benchmark solution. First, FBSA results are obtained for propagation over large scale terrain profiles and compared with measurements to assess the accuracy of FBSA. Then, accuracy of some International Telecommunication Union (ITU) and Federal Communications Commission (FCC) propagation models are investigated. It has been observed that, for rural areas, the prediction of the most recent ITU recommended propagation model (Rec. 1546) deviates much more than older models do.
Keywords :
electric field integral equations; electromagnetic wave propagation; electromagnetic wave scattering; inhomogeneous media; FBSA; FCC curve; Federal Communications Commission; ITU; International Telecommunication Union; empirical model; existent propagation model; fast integral equation; inhomogeneous terrain profile; rough surface scattering; spectrally accelerated forward-backward method; Acceleration; FCC; Integral equations; Large-scale systems; Polarization; Predictive models; Robustness; Rough surfaces; Scattering; Surface roughness; Federal Communications Commission (FCC) curves; International Telecommunication Union (ITU) recommendations; forward-backward spectral acceleration (FBSA) method; propagation models; rough surface scattering;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2005.854548
