
Accession Number : ADA333395
Title : Electromagnetic Imaging of Axisymmetric Scatterers.
Descriptive Note : Master's thesis,
Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Personal Author(s) : Wawrzyniak, Daniel J.
PDF Url : ADA333395
Report Date : JUN 1997
Pagination or Media Count : 111
Abstract : Radar crosssection is a key element of lowobservability. In order to reduce the crosssection of a particular platform, it may be necessary to determine the induced source distribution on the platform which produces the scattered electromagnetic radiation. Determining the distribution may be possible using a probe to measure fields on or near the outer surface of the object. However, the act of measuring may indeed influence the currents being measured. An alternate method is to backpropagate measurements made at distances beyond the realm of strong influence on the parameters of interest to construct visualizations of the local onsurface radiation contributions. This has been demonstrated for the case of cylindrical geometry. The theory is extended in this thesis to axisymmetric bodies for the special case of rotationally symmetric fields.
Descriptors : *SCATTERING, *ELECTROMAGNETIC RADIATION, *IMAGES, *AXISYMMETRIC, MEASUREMENT, DISTRIBUTION, FINITE ELEMENT ANALYSIS, OBSERVATION, THESES, RADAR, SURFACES, PLATFORMS, SYMMETRY.
Subject Categories : Fluid Mechanics
Nuclear Physics & Elementary Particle Physics
Radiofrequency Wave Propagation
Distribution Statement : APPROVED FOR PUBLIC RELEASE