Accession Number : ADA137462

Title :   General Electromagnetic Model for the Analysis of Complex Systems (GEMACS) Engineering Manual (Version 3). Volume 2.

Descriptive Note : Final technical rept. Feb 81-Jul 83,

Corporate Author : BDM CORP ALBUQUERQUE NM

Personal Author(s) : Kadlec,D. L. ; Coffey,E. L.

Report Date : SEP 1983

Pagination or Media Count : 221

Abstract : GEMACS solves electromagnetic radiation and scattering problems. The Method of Moments (MOM) and Geometrical Theory of Diffraction (GTD) are used. MOM is formalized with the Electric Field Integral Equation (EFIE) for wires and the Magnetic Field Integral Equation (MFIE) for patches. The code employs both full matrix decomposition and Banded Matrix Iteration (BMI) solution techniques. The MOM, GTD and hybrid MOM/GTD techniques in the code are used to solve electrically small object problems, electrically large object problems and combination sized object problems. Volume II is the Engineering Manual. The theory and engineering approximations implemented in the code are discussed. Modeling criterion are given.

Descriptors :   *Electromagnetic scattering, *Antenna radiation patterns, *Electric fields, *Magnetic fields, *Computerized simulation, *Mathematical models, *User manuals, *Electromagnetic radiation, Electromagnetic compatibility, Matrices(Mathematics), Solutions(General), Approximation(Mathematics), Computer programs, Electric wire, FORTRAN, Coding, Diffraction, Flat plate models, User needs, Requirements, Scattering, Decomposition, Edges, Moments, Reflection, Engineering, Models, Iterations, Integral equations

Subject Categories : Information Science
      Computer Programming and Software
      Electricity and Magnetism
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE