Title :
Optimal surface adjustment of haystack antenna
Author :
Zarghamee, M.S. ; Antebi, J.
Author_Institution :
Simpson Gumpertz & Heger Inc., Arlington, MA, USA
Abstract :
A procedure has been developed for the optimal adjustment of the primary reflector surface of an antenna. This procedure, when applied to the haystack radio telescopic antenna, involves the iterative adjustment of standoffs and shear studs, expanders, and cable guide offsets in the back of the panels. Optimal adjustments are selected to minimize the resulting surface RMS of the antenna, subject to the constraints of loss of precompression across expanders. It has been demonstrated that the procedure can be used effectively to improve the surface RMS of the haystack antenna to the goal of less than 200 micron (8 mil).<>
Keywords :
optimisation; radiotelescopes; reflector antennas; cable guide offsets; expanders; haystack antenna; iterative adjustment; loss; optimal surface adjustment; precompression; primary reflector surface; radio telescopic antenna; shear studs; standoffs; surface RMS; Aluminum; Apertures; Azimuth; Cables; Error correction; Holography; Manufacturing; Solids; Structural rings; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221816
