Title :
The geodesic constant method: a novel approach to analytical surface-ray tracing on convex conducting bodies
Author :
Jha, R.M. ; Wiesbeck, W.
Author_Institution :
Aerospace Electron. & Syst. Div., Nat. Aeronaut. Lab., Bangalore, India
fDate :
4/1/1995 12:00:00 AM
Abstract :
A generalized approach to analytical surface-ray tracing in three dimensions, and a review of its application to convex conducting bodies, is presented, using the Eisenhart coordinate system. The ray-parameters so obtained, for quadric cylinders (QUACYLs) and surfaces of revolution (QUASORs), are in a one-parameter form for UTD mutual-coupling applications. The ray analysis is also extended to the hybrid QUACYLs (e.g. aircraft wings) and hybrid QUASORs (e.g., satellite-launch vehicles), by introducing Hertz´s principle of particle dynamics to EM theory. This mathematical formulation is applicable even to other important non-Eisenhart surfaces, such as the ogive. A summary of the mathematical formulations is included
Keywords :
antenna accessories; antenna theory; differential geometry; electromagnetic field theory; ray tracing; satellite antennas; EM theory; Eisenhart coordinate system; Hertz´s principle; UTD mutual-coupling applications; aerospace structures; aircraft wings; analytical surface-ray tracing; convex conducting bodies; geodesic constant method; hybrid QUACYLs; hybrid QUASORs; mathematical formulation; multiple antennas; mutual coupling; nonEisenhart surfaces; ogive; particle dynamics; quadric cylinders; quadric surfaces of revolution; review; satellite-launch vehicles; three dimensions; Aerodynamics; Aerospace electronics; Aircraft; Conductors; Ellipsoids; Frequency; Ray tracing; Shape; Surface treatment; Vehicles;
Journal_Title :
Antennas and Propagation Magazine, IEEE