Italian trends in space technology
Abstract
A review of Italian advances in the design of satellite telecommunications systems is given. Among the specific technologies discussed are: an alternative NAVSAT configuration which reduces the number of satellites required for full coverage of the Northern Hemisphere; mobile satellite communications systems for polar regions; voice coding techniques; and spread spectrum techniques for TV Direct Broadcasting Satellite (DBS) systems. The design requirements of a spread spectrum DBS system are discussed in connection with some common satellite telecommunications problems, including: signal interference during GTO; acquisition delays due to Doppler shifts; and inaccurate range measurements. A computer program for on-board processing of multibeam antenna signals is described in detail.
- Publication:
-
IN: Europe/United States space activities (A86-28576 12-12). San Diego
- Pub Date:
- 1985
- Bibcode:
- 1985spac.book...67T
- Keywords:
-
- Italian Space Program;
- Spacecraft Communication;
- Technology Utilization;
- Broadcasting;
- Navigation Satellites;
- Polar Regions;
- Signal Encoding;
- Space Commercialization;
- Spread Spectrum Transmission;
- Time Division Multiplexing;
- Voice Data Processing;
- Communications and Radar