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

fYear

1998

fDate

6-10 July 1998

Firstpage

590

Lastpage

591

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 1998 Conference on

Conference_Location

Washington, DC, USA

Print_ISBN

0-7803-5018-9

Type

conf

DOI

10.1109/CPEM.1998.700070

Filename

700070