Abstract

The Orion Atlantic satellite system will provide transatlantic and regional communications serving North America and Europe. The system is being created to address market growth and new requirements of international video and business networks. Operation of the first satellite is scheduled for late 1994. The system supports digital and analog video, audio, and data distribution networks with emphasis on broad continental coverage areas. Higher-power spot beams are more suited to two-way communications. The capabilties for international connectivity, domestic and regional distribution are featured in the satellite and encompassed the system designs. An on-board RF switching matrix provides uplink selection and downlink switching and combining of beams, thereby creating a number of operational modes. The dualcapability transatlantic and regional coverage differentiates Orion 1 from other conventional systems designed primarily for a single purpose. Digital video compression is well-suited to the Orion 1 transmission and networking capabilities. Different operating modes of TVFM, TDM' and sCPC* digital transmission schemes are examined, and earth station size vs. performance for broadcast, SNG~, and business television are presented.

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