NARROW-WAISTED GAUSSIAN BEAM ALGORITHMS AS EFFICIENT FORWARD SOLVERS IN COMPLEX PROPAGATION AND SCATTERING SCENARIOS: REFINEMENTS AND FURTHER CALIBRATIONS OF PREVIOUSLY OBTAINED PRELIMINARY ALGORITHMS *

This paper contains a compact review of current applications of Gabor-based narrow-waisted Gaussian beam algorithms to wave propagation and scattering in complex environments. For illustration, we consider a particular example: short-pulse scattering from moderately rough dielectric interfaces, for which preliminary numerical simulations have been obtained previously. These simulations are extended here for more precise assessment of algorithmic accuracy and robustness, and are calibrated against independently generated numerical full-wave reference solutions. Refinements include additional parametric studies as well as attempts toward optimization for greater numerical efficiency