Title :
An implementation of the UTD on facetized CAD platform models
Author :
Hussar, Paul E. ; Oliker, Vladimir ; Riggins, Homer L. ; Smith-Rowlan, E.M. ; Klocko, William R. ; Prussner, Laird
Author_Institution :
IIT Res. Inst., Annapolis, MD, USA
fDate :
4/1/2000 12:00:00 AM
Abstract :
The Aircraft inter-Antenna Propagation with Graphics (AAPG) 2000 computer code relies on realistic computer-aided design (CAD) platform geometrical modeling to support uniform geometrical theory of diffraction (UTD) predictions of antenna-to-antenna coupling for aircraft-mounted antennas. The code employs novel ray-tracing techniques that permit the computation of UTD propagation paths over facetized objects of general shape. Moreover, geometrical data, required by UTD formulations for wedge and smooth-surface diffraction and reflection, are computed entirely from path and facetized-object geometries. Since the entire object representation in AAPG 2000 is in terms of facets, division of path-object interactions into wedge and smooth-surface cases must be performed heuristically
Keywords :
aircraft antennas; antenna theory; electromagnetic coupling; geometrical theory of diffraction; radiowave propagation; ray tracing; AAPG 2000 computer code; Aircraft inter-Antenna Propagation with Graphics 2000 computer code; UTD; aircraft-mounted antennas; antenna-to-antenna coupling; computational electromagnetics; computer-aided design; diffraction; facetized CAD platform models; facetized objects; geometrical modeling; object representation; path-object interactions; ray-tracing techniques; reflection; smooth-surface; uniform geometrical theory of diffraction; wedge; Aircraft; Antenna theory; Antennas and propagation; Computer graphics; Design automation; Physical theory of diffraction; Predictive models; Ray tracing; Shape; Solid modeling;
Journal_Title :
Antennas and Propagation Magazine, IEEE
