频谱仪参数分析及在电视会商系统中的应用  

Parameter Analysis and Application of Spectrum Analyzers in a Video Conference System

作　　者：刘红梅[1] 王春芳[1] 

机构地区：[1]国家气象信息中心通信工程部,北京100081

出　　处：《气象科技》2006年第B09期73-77,共5页Meteorological Science and Technology

摘　　要：全国天气预报电视会商及会议系统面向31个省的建设任务已经告一段落,但相关的运行维护还要持续很长一段时期。作为一种在通信领域广泛应用的传统测试仪器,频谱仪在卫星地面站的建设、运行和维护中发挥了很重要的作用。该文简要介绍了频谱仪的基本原理,对其关键参数如分辨率带宽、视频带宽、扫描时间、扫描范围等进行了分析,并结合全国天气预报电视会商系统中的工程应用,如卫星小站的入网调试、极化的监测与调整等进行了验证和说明。The National Meteorological Video Conference System has been completed in 31 provinces throughout China, but the related maintenance must be kept on for a long time. As a kind of traditional measuring instrument used widely in the telecommunication sector, spectrum analyzers are of great importance during the construction, operation and maintenance of satellite ground stations. The basic theory of spectrum analyzers is introduced, and the key parameters like the resolution bandwidth, the video bandwidth, the appropriate sweep time and span are analyzed. Then verification and explanation are given on the project of the weather forecast video conference over the country, such as how to enroll the remote satellite stations into the network, how to adjust and supervise the polarization angle rightly, and so on.

关 键 词：频谱仪 卫星通信 会商系统 

分 类 号：TN941.1[电子电信—信号与信息处理]