Abstract
The RATAN-600 antenna is a flexible multireflector system composed of reflectors of very large dimensions. An extended system, with improved performance in the millimetric range, includes a focal receiver array. Accurate electromagnetic analysis of such a system, and simulation of three-dimensional (3D) patterns, represents a substantial computational challenge. A fast Physical Optics method based on a multilevel subdivision of the surfaces of integration is proposed to address this problem. This method allows to perform Physical Optics integrals with a computational complexity comparable to that of the Fast Fourier Transform. The algorithm and initial numerical results of its application to the RATAN-600 antenna system are presented.
Original language | English |
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Pages (from-to) | 38-45 |
Number of pages | 8 |
Journal | Comptes Rendus Physique |
Volume | 13 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2012 |
Keywords
- Multilevel algorithm
- Multireflector antenna
- Physical Optics
- Radiotelescope