Citation
Abstract
During February and March 1973, the DSS 14 64-m antenna was fitted with major structural braces, and other structural modifications were made to improve low angle elevation system gain performance at centimeter wavelengths. The new system performance, as defined by the radiometric measurements of May 1973, is compared to the previous performance, with respect to system efficiency, subreflector focus, and equivalent radio frequency (RF) surface tolerance. The evaluation shows that the predicted effect of the structural braces has been achieved; however, either the main reflector or subreflector surface tolerance, or both, have been degraded. The degradation is well defined at X- and Ku-band frequencies; at S-band the effect is nearly negligible.
Details
- Volume
- XIX
- Published
- February 15, 1974
- Pages
- 110–115
- File Size
- 429.1 KB