【作者】 杨俊永；

【导师】 蒙建波；

【作者基本信息】 重庆大学 ， 检测技术与自动化装置， 2003， 硕士

【摘要】 随着经济全球化和信息化的发展，人们对移动中通过卫星网络接收卫星电视节目、进行电信通信和接入互联网Internet的需求越来越大。移动卫星多媒体系统正是这种需求的产物，它由移动卫星电视系统(Satvision)、移动卫星网络接入系统(Satnet)、移动卫星通信系统(Satcom)组成，本文研究的移动卫星电视系统是其中之一。在内陆江河湖泊和宽广无垠的海洋上，电视节目只能通过卫星接收和发送，船运业、海上石油勘测和钻探等对船载移动卫星电视系统的需求十分迫切。移动卫星电视系统的本质和核心是一个天线自动跟踪系统。论文从工程应用出发，首先介绍了天线自动跟踪系统的数学基础，然后对天线跟踪技术作一个概述，分析了各种跟踪技术的优缺点，并对本项目采用的圆锥扫描跟踪进行了详细的介绍。论文随后简单介绍了系统的结构和组成系统的硬件，本文的中心工作是得到快速、准确的控制算法，满足系统的各项技术指标。通过数据分析，得到了天线位置与信标信号强度关系模型，并根据此模型确定了控制算法。样机系统的调试和工作证明该算法是可行和有效的。最后，针对系统调试和工作过程中出现的问题，论文提出了下一步工作方向。更多还原

【Abstract】 Along with the economic globalization and the information, people require much to receive satellite TV program, make telecommunication and access to the Internet in the mobile status by means of the satellite net. This requirement derives the mobile satellite multimedia system, which is composed by the mobile satellite TV system (Satision), the mobile satellite net system (Satnet) and the mobile satellite communication system (Satcom). The Satvision system is been studied in this paper.On the river, the lake and the vast ocean , TV program can only be received by the satellite antenna. And so the ship industry and the oil platform urgently require this service on the ocean , that is the mobile Satellite TV Receiving System on the ship. The auto-tracing antenna system is the heart of this system.Based on the engineering application, this paper firstly introduces the mathematics foundation of the antenna-tracing system, and then summarizes the trace technique, analyzes the strongpoint and the disadvantage of them, especially the taper-scanning trace technique.This paper briefly introduces the architecture and the hardware of the real system .As its task is to get a rapid、accurate control arithmetic, which meets the design specification, this paper analyzes the satellite signal data , then finds the relation model of the antenna position and satellite signal strength. The system proves that the control arithmetic is available and valid during the debugging and the working.At last, this paper discusses some problems of the system and points out the next step of the work.更多还原