
Accession Number : ADA293036
Title : Physical Optics Polarization Scattering Matrix for a RightAngle Dihedral.
Descriptive Note : Technical rept.,
Corporate Author : MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
Personal Author(s) : Verly, J. G.
PDF Url : ADA293036
Report Date : 07 FEB 1995
Pagination or Media Count : 60
Abstract : Using the geometrical optics (GO) and physical optics (PO) approximations, a correct, complete, readytouse formula is derived from the backscatter (monostatic) polarization scattering matrix (PSM) of the perfectly conducting right dihedral at arbitrary incidence angle. The absence of such a result from the literature is surprising given that the dihedral's PSM is needed in many applications, such as in the calibration of polarimetric radars, including synthetic aperture radars (SAR), in the generation of simulated polarimetric radar imagery, and in automatic target recognition (ATR). Because the new results provided are important to many researchers who may not be experts in electromagnetic theory (as is often the case for the computervision researchers working on ATR), the report is relatively selfcontained and takes the reader from the definitions of PSMs and complex radar crosssections, through the mathematical formulation of Huygen's Principle, the combined use of GO and PO, and changes of polarization bases, to the derivation, discussion, and simplification of the dihedral's PSM.
Descriptors : *SYNTHETIC APERTURE RADAR, *RADAR CORNER REFLECTORS, TARGET RECOGNITION, POLARIMETRY, RADAR IMAGES, BACKSCATTERING, RADAR CROSS SECTIONS, GEOMETRY, CALIBRATION, COMPUTER VISION, ANGLE OF INCIDENCE, SIMPLIFICATION, FORMULAS(MATHEMATICS), RIGHT ANGLES, DIHEDRAL ANGLE.
Subject Categories : Active & Passive Radar Detection & Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE