基于智能天线的GPS信号采集与处理实验系统
发布时间：2018-10-23 17:00
【摘要】：随着GPS全球定位系统在军事和民用领域越来越广泛的应用，它容易被干扰的问题显得日益严重。由于干扰的影响，GPS接收机性能变得不稳定甚至完全失效。为了使GPS接收机能在干扰环境下正常工作，进行抗干扰GPS接收系统的研究就势在必行。 本文在概述了GPS的工作原理以及目前常用的抗干扰的手段的基础上，基于功率倒置算法抗干扰分析了接收系统的技术要求，结合软件无线电的基本理论知识，设计了GPS智能天线信号采集与处理实验系统，实验系统的总体硬件框架包括天线、微波网络、NI采集设备，实验系统软件部分包括基于LabVIEW平台的数字信号处理单元与GPS软件接收机，其中重点介绍了实验系统软件部分的实现方法。最后对系统功能进行了调试和验证，系统功能完整，工作正常能够满足实验处理系统的要求。 综上所述，，本文基于软件无线电思想，结合GPS定位原理设计和实现了GPS智能天线的信号采集与处理实验系统。
[Abstract]:With the increasing application of GPS in military and civilian fields, the problem of easy interference becomes more and more serious. Because of interference, the performance of GPS receiver becomes unstable or even completely invalid. In order to make the GPS receiver work normally in the jamming environment, it is imperative to study the anti-jamming GPS receiver system. On the basis of summarizing the working principle of GPS and the commonly used anti-jamming methods, this paper analyzes the technical requirements of the receiving system based on the power inversion algorithm, and combines the basic theoretical knowledge of software radio. The GPS smart antenna signal acquisition and processing experiment system is designed. The overall hardware frame of the experiment system includes antenna, microwave network, NI acquisition equipment. The software part of the experiment system includes the digital signal processing unit based on LabVIEW platform and the GPS software receiver. The implementation method of the software part of the experimental system is introduced emphatically. Finally, the system function is debugged and verified. The system function is complete and can meet the requirements of the experimental processing system. To sum up, based on the idea of software radio and the principle of GPS positioning, the signal acquisition and processing experiment system of GPS smart antenna is designed and implemented.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4;TN911.7
本文编号：2289903
[Abstract]:With the increasing application of GPS in military and civilian fields, the problem of easy interference becomes more and more serious. Because of interference, the performance of GPS receiver becomes unstable or even completely invalid. In order to make the GPS receiver work normally in the jamming environment, it is imperative to study the anti-jamming GPS receiver system. On the basis of summarizing the working principle of GPS and the commonly used anti-jamming methods, this paper analyzes the technical requirements of the receiving system based on the power inversion algorithm, and combines the basic theoretical knowledge of software radio. The GPS smart antenna signal acquisition and processing experiment system is designed. The overall hardware frame of the experiment system includes antenna, microwave network, NI acquisition equipment. The software part of the experiment system includes the digital signal processing unit based on LabVIEW platform and the GPS software receiver. The implementation method of the software part of the experimental system is introduced emphatically. Finally, the system function is debugged and verified. The system function is complete and can meet the requirements of the experimental processing system. To sum up, based on the idea of software radio and the principle of GPS positioning, the signal acquisition and processing experiment system of GPS smart antenna is designed and implemented.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4;TN911.7
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本文编号：2289903
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