1、1 GPS 液晶显示定位系统 摘要 GPS 技术在军事、通讯、气象、勘探、导航、遥感、大地测量、地球动力以及天文等众多学科领域得到极其广泛的应用，推动了科学技术的迅猛发展，也丰富了人类的科学文化生活。现在， GPS 的外型设计已经 转向 便携式发展，逐步踏入寻常百姓的生活中。所以，对 GPS 的研究具有十分重要的意义。 论文主要 研究 GPS 的定位原理与技术，单片机的编程及其应用，液晶屏的功能及其实现方法。制作了一套设计方案，以软、硬件相结合的方式完成整个GPS 数据接收和显示的过程。完成了一台液晶显示的手持式 GPS 定位接 收设备，并 依次显示实时时
2、间及所在地的经纬度。该定位系统完成后，定位精度能达到15m，所以该装置在测控领域的应用开发中具有一定的实用价值和借鉴价值 。 SUBTRACTION Global Positioning System technology get extremely comprehensive application at military,communications,meterology,exploration,navigation,remote sensing,earth survey, earth mover ,astronomy and other numerous subject fi
3、eld;let technology rapide development,also it makes human science culture life plentiful. Now, Assistant Global Positioning System exterior design already change of direction to portable type,step by step enter comman peoples daily life. Therefore, researching Assistant Global Positioning Syst
4、em has very important meaning. Paper main research GPS position theory and technique,program and application of singlechip,the function and implement way.Make a set of design proposal,with soft to link hardware accomplish whole GPS information acceptance and evincive process.Accomplish one handheld
5、GPS position receiving machine with Liquid crystal display,and display real time period and the location of latitude and longitude one by one.With the position system complete,the position precision can reach fifteen meters, so the system in measurement and control field application development have some practical worth and reference worth. 【 关键词 】 AT89S52 单片机 , GPS， 串口通信，波特率 。 2 目录 摘要 .1 第一章 硬件设计 .5 2.1 整版设计 .
