Personal communications satellite service system
Abstract
The main features of the Personal Communications System (PCS) are outlined. The PCS is composed of the following: a constellation of Low Earth Orbiting (LEO) satellites; and a ground segment made of a variety of user terminals, the gateway stations, the network management, and satellite control centers. A general overview of the system is provided, together with the definition of a satellite constellation suitable for PCS services. The adoption of LEO satellites sensibly reduces the power requirement of user terminals and allows users to share the system capacity among a large number of spacecraft. Results of a comparative analysis of access modes is presented together with the expected spacecraft complexity, which derives by the alternative adoption of two types of onboard antennas, with 7 and 19 spot beams. An overall dimensioning of the payload and general outline of the spacecraft are given.
- Publication:
-
Environment Observation and Climate Modelling Through International Space Projects
- Pub Date:
- July 1992
- Bibcode:
- 1992eocm.rept...75C
- Keywords:
-
- Communication Networks;
- Communication Satellites;
- Earth Orbital Environments;
- Satellite Communication;
- Satellite Configurations;
- Satellite Networks;
- Italy;
- Payloads;
- Satellite Design;
- Systems Engineering;
- Communications and Radar