Both frequency and time-domain methods will be investigated and their performance will be evaluated. Specific applications will be demonstrated. In this project, we develop hybrid numerical methods to compute electromagnetic scattering from realistic three-dimensional targets. As a result, they are accurate and efficient and can be applied to large complex targets. D. Reeves McDonnell Aircraft Co. This project is to develop new and innovative schemes for calculating the electromagnetic scattering from complex objects.
Special emphasis is in the area of scattering from large cavities, such as the jet engine inlets.
General-purpose computer codes based on the shooting and bouncing ray technique are being developed. The goal of this project is to develop a high-frequency computational tool for analyzing the radar signature of a realistic complex target. The scattered field computation is done with physical theory of diffraction and ray techniques. For the identification of realistic air and ground targets, a large library of range profiles is needed. The present project is to study computational methods for the range profile computation.