Scattering Center Analysis for Radar Cross Section Modification.
Abstract
At high frequencies, electromagnetic scattering can be described in terms of scattering centers. An understanding of the nature of these scattering centers as a function of scatterer geometry and composition is important for radar cross section modification. In this thesis the effects of corner rounding and resistive loading on the scattering center description are studied by first obtaining numerically the solutions to certain scattering problems and then applying an inverse scattering algorithm based on Prony's method. Scattering problems involving bodies too large for conventional moment method matrix inversion techniques are solved by an iterative approach based on the conjugate gradient method and employing the FFT for computational efficiency. In this way flat plates and finite cylindrical shells modeled with several thousand patches have been treated. Numerical results are presented which show that appropriate corner rounding and resistive loading can dramatically reduce the radar cross section of a scatterer.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- June 1984
- Bibcode:
- 1984PhDT........41H
- Keywords:
-
- Physics: Electricity and Magnetism; Remote Sensing;
- Electromagnetic Scattering;
- Geometry;
- High Frequencies;
- Radar Cross Sections;
- Algorithms;
- Conjugates;
- Iteration;
- Radar Scattering;
- Communications and Radar