Groundwave propagation modeling: Problem-matched analytical formulations and direct numerical techniques


Sevgi L. , AKLEMAN F., FELSEN L.

IEEE ANTENNAS AND PROPAGATION MAGAZINE, cilt.44, ss.55-75, 2002 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 44 Konu: 1
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1109/74.997903
  • Dergi Adı: IEEE ANTENNAS AND PROPAGATION MAGAZINE
  • Sayfa Sayıları: ss.55-75

Özet

In this overview of groundwave propagation, dedicated to the memory of J. R. Wait, we address a particular class of propagation scenarios in the presence of surface terrain and atmospheric refractivity. Beginning with idealized analytically solvable models over a smooth spherical Earth, we trace the progression toward more "reality" through physics-based numerical algorithms, operating in the frequency and short-pulse time domain, which take advantage of computational resources. An extensive sequence of simulations for various terrains and atmospheric refractivities, as well as different source-receiver arrangements and operating frequencies, serves to calibrate these algorithms one against the other, and establishes the range of problem parameters for which each is more effective.