# Accession Number:

## ADA399217

# Title:

## Dual Surface Electric Field Integral Equation

# Descriptive Note:

## In-House rept. Oct 1999-Jan 2001

# Corporate Author:

## AIR FORCE RESEARCH LAB HANSCOM AFB MA

# Personal Author(s):

# Report Date:

## 2001-01-01

# Pagination or Media Count:

## 102.0

# Abstract:

A detailed analysis and solution of the problem of scattering by a perfectly electrically conducting body of revolution using the dual surface electric field integral equation DSEFIE is given for the first time. Scattering calculations using the DSEFIE are free from the spurious resonances that can seriously degrade the accuracy of calculations made using the conventional electric field integral equation or magnetic field integral equation. The Galerkin form of the method of moments is used to solve the DSEFIE, and the solution is given by detailed expressions suitable for computer programming. Calculations performed with a computer program of the DSEFIE solution demonstrate the removal of spurious resonances from radar cross section patterns of spheres, spheroids, and finite cylinders obtained with the conventional electric field integral equation. Cone-sphere scattering calculations show the importance of careful placement of the dual surface when the DSEFIE is applied to scatterers with narrow tips.

# Descriptors:

# Subject Categories:

- Computer Programming and Software
- Electricity and Magnetism
- Radiofrequency Wave Propagation