TY - JOUR
T1 - Analysis of the RATAN-600 radiotelescope antenna with a multilevel Physical Optics algorithm
AU - Letrou, Christine
AU - Khaikin, Vladimir
AU - Boag, Amir
PY - 2012/1
Y1 - 2012/1
N2 - 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.
AB - 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.
KW - Multilevel algorithm
KW - Multireflector antenna
KW - Physical Optics
KW - Radiotelescope
UR - http://www.scopus.com/inward/record.url?scp=84855534360&partnerID=8YFLogxK
U2 - 10.1016/j.crhy.2011.10.011
DO - 10.1016/j.crhy.2011.10.011
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AN - SCOPUS:84855534360
VL - 13
SP - 38
EP - 45
JO - Comptes Rendus Physique
JF - Comptes Rendus Physique
SN - 1631-0705
IS - 1
ER -