文档介绍：南京邮电大学
硕士学位论文
便携式卫星通信地球站设备可靠性分析与设计
姓名:连峰
申请学位级别:硕士
专业:电子与通信工程
指导教师:谢继东
2011-05
南京邮电大学全日制工程硕士研究生学位论文摘要
摘要
便携式卫星通信地球站是一种可携带的超***卫星通信地球站,它通过与地球同步轨
道通信卫星的链路形成卫星通信网络,支持话音、数据、音视频和广域网接入等多媒体通信
业务,是实现远程数据传输、事故现场视频转播和远程指挥调度等业务的良好手段。
便携式卫星通信地球站的跟踪原理是通过卫星信号接收机捕获同步卫星发出的信标信号
或者转发的宽带业务信号,对其下变频,然后由信号处理单元检测出与信标信号成正比的直
流电压送给伺服控制系统,完成天线对卫星的跟踪。便携式卫星通信地球站应用环境常常比
较恶劣,因而,对设备的可靠性有很高的要求,而目前国内外的对便携式卫星通信地球站的
研究主要集中在如何改进与提高跟踪技术优化以及系统结构设计上,对设备的可靠性的研究
研究较少。
本课题以便携式卫星通信地球站设备在实际中的应用为背景,以提高设备的可靠性为中
心,在多年对便携式卫星通信地球站的研究成果的基础上,应用电子设备可靠性的方法,对
便携式卫星通信地球站设备进行系统级可靠性分析与设计;主要内容有可靠性预计、可靠性
分配、故障树分析和可靠性设计等。
关键词: 便携站,可靠性预计,可靠性分配,故障树分析,可靠性设计
I
南京邮电大学全日制工程硕士研究生学位论文 Abstract
Abstract
Portable munications earth station is portable ultra-small aperture satellite
communication earth stations, municate with satellites by geosynchronous orbit satellite
communication links to works for munication services such as data, audio
and video, and ess. Portable munications earth station is a significant means
for remote data transmission, video broadcasting and remote dispatching of the accident scene.
The principle of the tracking satellites for portable munications earth station is such
that the beacon signal by synchronous satellite sent or the broadband signal by satellite transmitted
is captured by the satellite signal receiver, down-converted, detected out by the signal processing
unit as to the DC voltage proportional and then sent to servo control system. Thereby the satellite
tracking pleted. The districts of portable munications earth station serves for are
often relatively poor, thus, it is essential to have high reliability of the equipment requirements.
However, the current domestic and international munications earth stations studies
focuses on how to improve and enhance the tracking technology optimization and system structure
design, the reliability of the equipment has not yet researched at present.
The article of portable munication earth station equipmen