Accession Number : ADP005648
Title : Physical Optics Method: Prediction of Radar Signatures,
Corporate Author : DEUTSCHE FORSCHUNGS- UND VERSUCHSANSTALT FUER LUFT- UND RAUMFAHRT E V OBERPFAF FENHOFEN (GERMANY F R)
Personal Author(s) : Stein, V.
Report Date : JUN 1987
Pagination or Media Count : 17
Abstract : The physical optics method finds increasing interest in the computation of radar signatures of complicated objects, which are large compared to the wavelength. A series of ideal conducting structures for which the physical optics method has been successfully applied to compute the back-scattered field is presented at first. The basic idea of physical optics following the Huygens-Helmholtz principle is evaluated. The surface integrals for the electromagnetic scattered field are presented and discussed. Some details of the physical optics method, when applied to complicated structures, are considered in the form of a short survey. This includes the hidden surface problem, the ability to predict depolarization effects for certain situations, the evaluation of the phase integral, the extension of physical optics to treat double reflections, the accuracy of the geometrical model and an estimation of the computer time. In the conclusion some steps for further extension and improvement of the physical optics method are summarized.
Descriptors : *TARGET CLASSIFICATION, *RADAR SIGNATURES, MATHEMATICAL PREDICTION, RADAR TARGETS, ELECTROMAGNETIC SCATTERING, BACKSCATTERING, NATO.
Subject Categories : Target Direction, Range and Position Finding
Active & Passive Radar Detection & Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE