Acquisition, synchronization and system management for the INTELSAT TDMA system
Abstract
Operation and switching among the transponders of the Intelsat V and VI satellites to ensure acceptable time-sharing among the satellites users are described. Intelsat V features 6/4 coverage of antennas with two hemispheric beams and two zone beams in the hemispheric beams with opposite polarization. Bursts upcoming from earth arrive in a predefined repetitive sequence, with a change of the reference bursts occurring every 16 frames. System control and management of the TDMA system is achieved by transmitting a reference burst through a control and delay channel and a service channel and a traffic burst through a service channel in the form of a 32 bit word. The service channel receives alarms and coordination messages signalling burst time plan changes. Attention is also given to the synchronization procedure, synchronization in multitransponder operation, reference station synchronization and to satellite position determination and management functions.
- Publication:
-
5th International Conference on Digital Satellite Communications
- Pub Date:
- 1981
- Bibcode:
- 1981dsc..conf..377F
- Keywords:
-
- Bit Synchronization;
- Data Acquisition;
- Intelsat Satellites;
- Systems Management;
- Time Division Multiple Access;
- Time Sharing;
- Channels (Data Transmission);
- Orbital Position Estimation;
- Satellite Transmission;
- Switching;
- Transponders;
- Communications and Radar