基于单片机的GPS定位信息处理

为了保障舰船在海上能够快速有效的定位，并且实现全球定位功能，本文介绍了一项利用单片机采集和处理GPS定位信息的设计。该系统以ATMEL公司的AT89C51单片机为核心控制器件，通过串行口与GPS模块HOLUXGR87通信，接收GPS模块输出的时间和定位信息，该输出信息格式采用NMEA-0183标准格式中的GPRCM语句。单片机接收到定位信息和时间信息后，将GPS模块输出的时间信息进行时差调整，再将所获取的位置和时间信息通过显示终端显示。经过调试后，本系统可以接收GPS定位信息和时间信息，并把经度、纬度和时间通过屏幕显示出来。

GPS position information processing based on single chip computer

For the boat on the sea can obtain available position information rapidly and can globally, a single chip computer based design of GPS position information acquisition is introduced. This system employs ATMEL＇s AT89C51 as a core controller, communicating with GPS module（HOLUX GR-87）in serials port, receives NMEA-0183 standard formed navigating data output from GPS module, among which GPRMC is selected to acquire geological information and timing information. Finally the acquired geological information and timing information are displayed on the display terminal after proper data processing such as time difference correction. Afte debugging, this system can receive GPS position information and time information, and can display longitude , latitude and time.