Virtual Mode Surface Duct Model for Fact Open PDF Document Details Document Type Technical Report Publication Date Sep 28, 1980 Accession Number ADA955991 Entities People F. J. Ryan Tags Communities of Interest Advanced Electronics Air Platforms C4I Cyber DTIC Thesaurus Topics Amplitude Asymptotic Series Attenuation Continuous Spectra Differential Equations Diffraction Eigenvalues Equations Frequency Geometry Grazing Angles Plastic Explosives Refraction Refractive Index Regge Poles Scattering Transmission Loss