The main principles of a 70-m radio telescope reflecting system design

Author

Grishmanovsky, Victor A. ; Kozlov, Alexander N. ; Tarasov, Vladimir B.

Author_Institution

Inst. of Space Device Eng., Moscow, Russia

Volume

40

Issue

6

fYear

1992

fDate

6/1/1992 12:00:00 AM

Firstpage

1267

Lastpage

1273

Abstract

Design work on a 70-m axisymmetrical reflector antenna with modified reflector profiles, the RT-70, which began in 1969 is described. In the design process complex problems arose due to diffraction phenomena on the twin-reflector commutator. To solve these problems special diffraction shields were used. Another problem encountered was that of phase compensation of the reflector system gravitational deformation. The reflector shape is not a second-order surface in this system. This problem was solved successfully, and results of radioastronomical investigation of the phase-compensation-system performance are given

Keywords

electromagnetic wave diffraction; radiotelescopes; reflector antennas; 70 m; RT-70; axisymmetrical reflector antenna; diffraction phenomena; diffraction shields; gravitational deformation; modified reflector profiles; phase compensation; radioastronomical investigation; twin-reflector commutator; Antenna feeds; Buildings; Communication switching; Communication systems; Diffraction; Optical surface waves; Process design; Radio astronomy; Reflector antennas; Shape;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.141360

Filename

141360