Technology tradeoff for a future Korean satellite communication system

Abstract

Based on the recent 75 foreign satellites, the state-of-the art satellite technology and Koreasat-1, 2 and 3，and considered the economic development in southeast Asian regions, a tradeoff of future Korean satellite communication system has been studied. For the effective use of the satellite, the system under study provides services over the regions covering China, Japan, Southeast Asia and Korea. It provides multimedia services and broadcast services. In future, the satellite will play an important role in multimedia applications and is ideally suited to serve large geographical area. The system uses the multibeam reflector antenna to cover several countries and on-board processor to provide multimedia services. It also employs different TWTAs which are 90W-TWTA, 130W-TWTA. This is to make up for rain attenuation and to increase the satellite efficiency. The link performance, including the rain attenuation, between Daejeon and Daejeon is evaluated. Through these link analysis, the required antenna size and HPA power of the earth station a function of data rata is determined.