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1.网络的一般特性 (1)业务需求: 业务类型及业务量;传输容量。 (2)组网方式: 网络结构;网络规模,近期(一年内)和远期(三年内)的规划、启用日期;服务范围(国际或国内)、业务性质(公众或专用)。 (3)技术体制: 信源编码方式、复用方式、纠错方式;调制制度;多址联接方式、分配制度;网络控制方式。 2.空间电台特性 卫星空间电台名称、轨道位置; 拟使用的上、下行频段;
1. The general characteristics of the network (1) business needs: business type and volume of business; transmission capacity. (2) Networking: network structure, network size, recent (within a year) and forward (within three years) planning, opening date; service scope (international or domestic), business nature (public or private). (3) technical system: source coding, multiplexing, error correction mode; modulation system; multiple access methods, distribution system; network control. 2. Space station characteristics Satellite space station name, orbit position; intended use of the downlink band;