直播星定向覆盖前端系统  

DTH Directional Coverage of Front-end System

作　　者：张林 杨彩曌 罗信海 胡滨 

机构地区：[1]贵州广播电视台,贵州550002

出　　处：《广播与电视技术》2016年第9期139-142,共4页Radio & TV Broadcast Engineering

摘　　要：贵州广播电视台新增两套电视节目、两套广播节目通过直播卫星实现省内定向覆盖,于近期建设前端编码复用系统以保障信号传输的安全。系统建设在方案制定及比较、设备选型及测试过程中均做了大量的改进和优化,最终整套系统经过测试稳定后投入使用。系统在性能上具有较好的可靠性和安全性,且未来系统升级平滑稳定。Guizhou Radio and Television Station has added two sets of television programs and two sets of radio programs. The programs were covered by direct broadcast satellite oriented to Guizhou province. A front-end code multiplexing system was built to ensure the security of the signal transmission. During system construction, a lot of improvement and optimization has been done in many aspects such as scheme formulation, equipment selection and testing process. Eventually the system was put into use after testing. The system has good reliability and security in performance, and the system will be upgrade smooth and stable in the future.

关 键 词：直播星 户户通 前端系统 编码 

分 类 号：TN948[电子电信—信号与信息处理]