Frequency Dependent Ray Theory
Friday, October 31, 1986 12:00 p.m. Terry L. Foreman Applied Research Laboratories The University of Texas at Austin Geometrical ray theory has proven to be a versatile and popular method for obtaining approximate solutions to the Helmholtz equation ∇2Ψ+k2Ψ=0 in such diverse fields as optics and underwater acoustics. But ray theory suffers from several deficiencies,…