Satellites and switching

Features of satellites communications systems are reviewed, including aspects of configurations that tend to reduce coverage flexibility and increase throughput. A current trend is identified, that of increasing the number of spot beams and ground terminals. The tendency is projected to increase the use of multiple feeder horns and TDMA and FDMA switching techniques. Commutation functions may be altered to involve transponder hopping. The number of spot beams will increase correspondingly with the number of smaller receiver stations, thereby driving the increased use of commutation and dynamic management of satellite systems resources. A greater implementation of on-board intelligence is indicated for improving resources efficiency.