Title :
Complex-frequency poles and creeping-wave transients in electromagnetic-wave scattering
Author :
Gaunaurd, G.C. ; Überall, H. ; Nagl, A.
Author_Institution :
Naval Surface Weapons Center, Silver Spring, MD
Abstract :
The impulse response of conducting targets is characterized by complex-frequency poles and their residues, as emphasized in the Singularity Expansion Method. We show that residue sums over correctly chosen pole subseries synthesize first and higher creeping waves on a sphere and describe their multiple circumnavigations with their proper (group) velocity.
Keywords :
Acoustic scattering; Electromagnetic scattering; Electromagnetic transients; Physics; Poles and zeros; Radar scattering; Shape; Silver; Springs; Weapons;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1983.12538
