Title :
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
fDate :
6/1/1992 12:00:00 AM
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;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
