Modeling and Validation of the Effects of a Metal Ground Plane on the RCS of an Asymmetric Trihedron
Abstract
The T5M3 trihedron is a small and physically simple radar target that was used for modeling and experimental studies of the effects of a metal ground plane on its radar cross section (RCS) . This trihedron is asymmetric and has one vertical face that is slanted backward 15 degrees from the vertical. Despite its physical simplicity as a radar target, it requires an exact solver code to accurately predict its RCS. In outdoor experimental tests, it was found to exhibit a significantly different RCS depending upon whether it is placed directly on the turntable or is isolated from the turntable. This paper presents the results of model RCS calculations via Xpatch, an approximate, physical optics-based, shooting-and-bouncing rays code, and a Method of Moments code (the fast Illinois solver code or FISC), as well as the experimental results. These calculations show the mechanisms by which the RCS of the trihedron is impacted by the metal turntable.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2002
- Accession Number
- ADP023102
Entities
People
- Christopher Kenyon
- William A. Spurgeon
Organizations
- United States Army Research Laboratory