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摘要GPS卫星导航定位系统凭借它自身优越性在全球越来越受到欢迎，应用也越来越普及。现如今，GPS全球定位系统在各个领域所发挥的作用越来越突出，比如在手机通讯、汽车导航、船舶运输等民用商用领域都得到了广泛认同。GPS最初的发明是为战争服务，所以在现代战争中，它的主导作用越来越得到强化。
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本篇论文就是要在了解GPS全球定位系统的基础上，进一步测试GPS接收机的性能。测试GPS接收机的性能就需要GPS信号模拟器模拟产生真实环境下的GPS信号。其中要利用SystemView软件实现仿真平台的搭建，粗略的模拟信号发生、传送和接收的过程，然后再在SystemView仿真软件中搭建单星和双星的GPS信号生成电路，发射电路和接收电路，以此来模拟信号的产生和接收。最后对模拟出的GPS信号进行了性能分析。23231
关键词 GPS SystemView仿真软件
毕业设计说明书（毕业论文）外文摘要
Title The simulation research of GPS satellite signals based on SystemView
Abstract
GPS satellite navigation and positioning system with its own superiority in the world are becoming more and more popular, application is more and morepopular. Now, more and the role played by the GPS global positioning system in the fields of more prominent, such as mobile phone communications, navigation,shipping and other civil and commercial areas have been widely recognized. GPS initially was invented for war service, so in the modern war, its leading role inmore and more strengthened.
This thesis is based on understanding of the GPS global positioning system,further performance test of GPS receiver. Performance test of GPS receiverrequires GPS simulator to generate GPS signals in real environment. Therealization of simulation platform with SystemView software, analog signal roughoccurrence, transmitting and receiving process, and then build a GPS signal generating circuit of single and binary star in the SystemView simulation software,a transmitting circuit and a receiving circuit, the analog signal generation and receiving. At the end of the GPS signal simulation is carried out to analyze the performance.
Keywords GPS The simulation software of SystemView
目 次
1 引言 1
1.1 研究背景 1
1.2 本课题的研究目的和意义 1
1.3 课题研究内容 1
2 GPS系统原理 2
2.1 GPS系统组成及其相应仿真要求 2
2.1.1 GPS系统组成 2
2.1.2 GPS仿真要求 2
2.2 GPS信号原理及其特性 2
2.2.2 C/A测距码产生方法 5
2.2.3 利用P码测距码生成的原理以及其实现方式 6
2.2.4 GPS数据码特性 6
2.3 本章小结 6
3 GPS信号仿真方法研究 7
3.1 直扩通信原理及其仿真 7
3.1.3 直接序列扩频信号接收原理及其实现方式 10
3.2 扩频码原理及其特性研究 12
3.2.1 m序列生成原理及特性 13
3.2.2 Gold 码生成原理及特性 13
3.3 GPS信号仿真平台结构设计 13
4 基于SystemView的GPS信号仿真及实现 15
4.1 SystemView 简介 15