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。毕业论文主要研究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数据采集和显示的过程。完成了一台液晶显示的手持式GPS定位接收设备，并能依次显示实时时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。20383
关键词： GPS定位；数据采集；单片机
Data Acquisition System Based On GPS Module
Abstract:GPS technology is in the military affairs, such numerous disciplines domains as communication, meteorological phenomena, exploring, navigating, remote sensing, earth measurement, the earth motive force and astronomy, etc. get extremely extensive application,  have promoted the swift and violent development of science and technology, the abundant and human even scientific culture life. Now, the appearance of GPS is designed and already turned to portable development, steps foot on common people's life progressively. So, It is very important for researching of GPS. Localization principle and technology of main research GPS of this text, programming and application of the one-chip computer, the function that the liquid crystal rejects and implementation method. Thus make out a set of design plans, through constant debugging and test, combine and finish the whole course received and shown in whole GPS data with the software and hardware. In this subject, will finish the holding type equipment of GPS positioning that a liquid crystal shows, and can show real-time time and longitude and latitude of the site sequentially. After this navigation system is finished, orienting the precision can reach 15m.
Keywords:  GPS positioning; Data Acquisition; SCM(Single Chip Microcomputer)
目录
1 GPS系统介绍    1
1.1 GPS 的组成概况    1
1.1.1 空间星座部分    1
1.1.2 地面监控部分    2
1.1.3 用户设备部分    3
1.2 GPS 定位的基本方法    3
1.3 GPS 接收机的基本工作原理    4
1.3.1 码相关型通道    4
1.3.2 平方型通道    5
1.3.3 码相位型通道    6
1.4 GPS 接收机与提取定位数据    6
  1.5 GPS_A01 模块    8
2 STC89C52单片机    9
2.1 STC89C52 单片机的内部结构及芯片图    9
2.1.1 主要功能特性    9
2.1.2 管脚说明    10
2.2 振荡器特性    12
2.3 芯片擦除    12
2.4 STC89C52 寄存器    13
2.5 时钟电路    14
2.6 复位电路    14
2.7 AT89C52 的串口模式    15
      2.7.1  串行端口处于模式0    15
     2.7.2  串行端口处于模式1    15
     2.7.3  串行端口处于模式2    16
     2.7.4  串行端口处于模式3    17
     2.7.5  串行端口的波特率规划    17
3 液晶显示器（LCD）    18
3.1 主要技术参数和性能    19
3.2 外形尺寸图    20
3.3 模块的外部接口    21 基于GPS模块的数据采集系统的设计+单片机源程序:http://www.751com.cn/tongxin/lunwen_12144.html