Title :
Precision holographic measurements of 64- meter reflector antenna in Medvezhy Ozera
Author :
Kalinin, A.V. ; Poperechenko, B.A.
Author_Institution :
Radiophys.. Res. Inst., Nizhny Novgorod, Russia
Abstract :
The report presents results of measurements of mirror surface on one of largest Russian radiotelescopes-64-meter antenna in a space communication centre near Moscow. Radioholographic measurements with satellites signals were fulfilled on this antenna. Restored map of main mirror shows deviations near of 2 mm rms. Rms difference of the maps measured under identical conditions was about 0.1 mm. After partial adjustment of mirror surface an antenna efficiency was increased from 0.51 to 0.65 at 5-cm band. A stability of mirror form was investigated by means of comparison of maps measured under different external conditions.
Keywords :
antenna accessories; antenna radiation patterns; antenna testing; holography; mirrors; radiotelescopes; reflector antennas; 5 cm; 64 m; Medvezhy Ozera; Moscow; Russian radiotelescopes; deviations; holographic measurements; mirror surface; reflector antenna; satellites signals; space communication; Antenna measurements; Apertures; Distortion measurement; Extraterrestrial measurements; Holography; Mirrors; Reflector antennas; Satellite antennas; Satellite broadcasting; Testing;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.700070
