Interpolation methods for GTD analysis of shaped reflectors
Abstract
The finding of smooth analytic representations for antenna reflector surfaces which are prescribed only by discretized data obtained by various synthesis methods is examined. Frequently the data are distributed in a nonuniform grid and contain noise. The smoothness required is to C sub 1 for physical optics diffraction analysis and to C sub 2 for geometrical theory of diffraction (GTD) analysis. The GTD analysis approach requires a surface description which returns data very rapidly. Two methods of interpolation, the global and the local methods, are discussed. They each have advantages and disadvantages; characteristics are discussed and examples are presented.
- Publication:
-
In its The Telecommun. and Data Acquisition Rept. p 62-67 (SEE N85-19224 10-32
- Pub Date:
- February 1985
- Bibcode:
- 1985tdar.nasa...62G
- Keywords:
-
- Geometrical Theory Of Diffraction;
- Interpolation;
- Two Reflector Antennas;
- Communication;
- Mathematical Models;
- Numerical Analysis;
- Reflectors;
- Wave Diffraction;
- Communications and Radar