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卫星电视直接广播业务各国都在迅速发展。为了普及卫星电视广播的一般知识,本文对卫星电视广播系统的主要内容,作了简要的说明。全文分三部份,第一部份是电视广播卫星技术问题;第二部份是卫星电视广播用的地面站技术问题;第三部份是卫星电视广播系统的其它性能。本文列举了主要的系统性能参数(76年水平)和CCIR的有关文件号,以便查找。1 卫星技术CCIR草案报告AD/10-11给出了卫星电视广播业务的卫星的一些技术特性。电视广播卫星的技术特性,在许多方面类似于通信卫星,如遥测传输、指令接收等都是很类似的。其差别在于:由于要简化地面接收设备,电视广播卫星发射机的幅射功率是很大
Satellite broadcasting all countries are rapidly growing. In order to popularize the general knowledge of satellite television broadcasting, this article gives a brief description of the main contents of the satellite television broadcasting system. The full text is divided into three parts, the first part is the technical issue of television broadcasting satellite technology; the second part is the technical problem of ground station for satellite television broadcasting; the third part is other performance of satellite television broadcasting system. This article lists the major system performance parameters (76-year level) and the CCIR related file numbers for easy reference. 1 Satellite Technology CCIR Draft Report AD / 10-11 gives some of the technical characteristics of satellites for the satellite television broadcasting service. The technical characteristics of television broadcasting satellites are similar in many respects to communications satellites such as telemetry transmissions and command reception. The difference is that because of the need to simplify ground-based receiving equipment, the radiated power of a TV broadcast satellite transmitter is significant