摘要随着GPS系统的发展，GPS产品的研制越发受到各国的重视。市场上现有多种的GPS接收机，能满足用户定位的各种需求。为了检验GPS接收机的性能，需要使用GPS信号，因而研发GPS信号模拟源也成为定位导航系统发展的一种需要。GPS信号模拟器作为一类成本较低、使用灵活的测试型工具，能为接收机提供不受时间、空间约束的仿真模拟信号，在未来将发展成为检验接收机性能的标准化工具。
本文以某型号一文弹道修正弹的弹载信号接收机为背景，设计了一款基于AVR单片机的GPS信号模拟发射器。该模拟器将回收的弹道数据存储，用户可根据需求利用键盘进行弹道数据选择，同时操作过程在液晶屏幕上同步显示，以此实现“可视化”操作。用户选择的弹道数据将会被传输至弹载接收机，用于模拟导弹的飞行情况，以此检验接收机工作情况。21437
关键词 GPS接收机 号模拟器 可视化”操作 模拟飞行
毕业论文设计说明书（论文）外文摘要
Title Design and Implementation Analog GPS Signal Transmitter
Based on AVR Singlechip
Abstract
With the development of GPS system,more nations pay attention to the research of GPS products. Various GPS receivers on the current market can meet different locating needs for users. Since performence test of recivers needs GPS signal, design of simulated source of GPS signal is required by development of Position and navigation system. The analog GPS signal transmitter is advantage and flexible, and can provide simulated signal without time and space restricting for recivers. The analog GPS signal transmitter will become the standard tools for the performence test of GPS recivers.
This paper designs an analog GPS signal transmitter based on ATmega128, applied to the missile-borne GPS reciver of an one-dimension trajectory correction projectile. The transmitter stores reclaimed ballistic data. Users can choose needed ballistic data by using keyboard，and operating process displays in LCD screen synchronously. As a result, The system can achieve "Visualization" operation. The ballistic data chosed will be sent to the missile-borne reciver to simulate flight of projectile， and the performence of GPS reciver can be tested.
Keywords GPS receiver analog signal transmitter "Visualization" operation simulation of flight
目 次
1 绪论 1
1．1 本课题的研究背景 1
1.2本课题相关内容研究发展简介 1
1.3 本课题研究用途及意义 5
1.4 论文章节安排 6
2 GPS信号模拟器总体设计 6
2.1 引言 7
2.2 GPS信号模拟发射器的总体设计要求 7
2.3 GPS信号模拟发射器的总体设计方案 7
2.4 本章小节 9
3 GPS信号模拟器硬件设计方案 10
3.1 引言 10
3.2 系统硬件的选用及优点 10
3.3 ATMEGA128单片机片内资源利用 13
3.4 外部存储器扩展 13
3.5 测试平台 14
3.6 本章小节 14
4 GPS信号模拟器软件设计方案 15
4.1 引言 15
4.2 软件开发环境的选择 15
4.3 主要输入输出数据 15 基于AVR单片机的GPS信号模拟发射器的设计与实现:http://www.751com.cn/zidonghua/lunwen_13639.html