直、录播卫星数字电视的接收  

Living and Recorded Satellite Digital Video Broadcast Receive

作　　者：李世杰 王姚娣 

机构地区：[1]宁波电视台,浙江宁波315012

出　　处：《中国有线电视》2006年第14期1338-1342,共5页China Digital Cable TV

摘　　要：与卫星模拟电视的接收相比较,卫星数字电视的接收更为困难,要求更高,重点阐述直、录播卫星数字电视接收应注意的问题,如天线的选择、接收机的选用、系统备份、信号测试、非接收时间段接收系统的维护等。Compared the signal of satellite digital video broadcast with that of analog ones, the receiving of digital signal is more difficuh, its requirement is more higher. This paper focuses on explaining some watchful issues, appeared in living and recorded satellite digital video broadcast receiving, such as antenna selection, receiver choice, system backup, signal measurement, receiving system maintenance during non-receiving period, watchful issues in receiving on duty.

关 键 词：卫星数字电视 DVB-S标准 单路单载波SCPC 多路单载波MCPC 天线 高频头 中频电缆 接收机 

分 类 号：TN943.3[电子电信—信号与信息处理]