Physical Optics Polarization Scattering Matrix for a Right-Angle Dihedral.
Abstract
Using the geometrical optics (GO) and physical optics (PO) approximations, a correct, complete, ready-to-use 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 computer-vision researchers working on ATR), the report is relatively self-contained and takes the reader from the definitions of PSMs and complex radar cross-sections, 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 07, 1995
- Accession Number
- ADA293036
Entities
People
- J. G. Verly
Organizations
- Massachusetts Institute of Technology