Title :
Multilevel fast multipole calibration of ray models with application to wireless propagation
Author :
Li, Ling ; Carin, Lawrence
Abstract :
Ray tracing models are known to yield accurate results if a sufficient number of terms (e.g. diffraction mechanisms) are accounted for in the asymptotic formulation. For wireless applications one desires a ray analysis in which the fewest number of terms are retained, to obtain accurate and computationally efficient results. When retaining a subset of scattering mechanisms in a ray solution, validation is desirable via a rigorous numerical model. In the work presented here the multilevel fast-multipole algorithm is used to validate ray-tracing models for complex environments, including forest-like media.
Keywords :
conducting bodies; electromagnetic wave diffraction; electromagnetic wave propagation; electromagnetic wave scattering; ray tracing; multilevel fast multipole calibration; perfect electric conductor; ray tracing models; scattering mechanisms; uniform theory of diffraction; wireless propagation; Calibration; Dielectric losses; Electromagnetic diffraction; Electromagnetic propagation; Electromagnetic scattering; Frequency; Predictive models; Ray tracing; Surface treatment; Surface waves; Multilevel fast multipole method; propagation; ray-tracing method;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2004.834623