Multimission advanced configurations study
Abstract
The feasibility of accommodating a Ka-band, Ku-band and L-band mission on a stretched Olympus platform for launch on Ariane 4 was analyzed. Results show that there are adequate mass and power margins with the launch capability, giving a high confidence that all technical problems may be resolved. The constraints arising from the accommodation of the 2 subreflectors necessary for a 3 band mission leads to a high Ku band magnification factor (m=3) with resulting impacts on the Ku band feed cluster dimensions. The 30 db beam isolation is not met everywhere in the Ku band. The Ka band edge of coverage gain of 51 dBi is not reached with the baseline reflector dimensions even without considering the losses due to the reflection on the Ka subreflector. Other problems include orbital position, pointing accuracy, and reflector technology (solid reflectors may have stowage problems, mesh reflector technology is less mature).
- Publication:
-
Final Report SATCOM International
- Pub Date:
- August 1986
- Bibcode:
- 1986satc.rept......
- Keywords:
-
- Antenna Design;
- Extremely High Frequencies;
- Reflector Antennas;
- Spacecraft Antennas;
- Superhigh Frequencies;
- Ultrahigh Frequencies;
- Ariane Launch Vehicle;
- Communication Satellites;
- Technology Assessment;
- Communications and Radar