【摘要】 嵌入式GIS是指地理信息系统在嵌入式设备如PoketPC熏PDA上的应用。嵌入式设备具有体积小、携带方便等优点熏结合GPS的定位功能熏使得嵌入式GIS在导游导航、数据采集等各个领域具有广泛的应用。本文主要介绍了如何在嵌入式GIS中接收GPS信号熏以及如何对数据进行分析和处理熏同时也介绍了一个在导游导航系统中应用的例子。其中对GPS信号的接收涉及到串口通讯的相关知识熏对GPS数据的解析涉及到分析GPS信号的数据格式。这里主要分析了常见的NMEA-0813数据格式。更多还原

【Abstract】 Embedded GIS is the application of GIS on embedded devices such as PoketPC, PDA etc. Embedded devices is small and portable, combined with the function of GPS position, GPS make the application of embedded GIS in many fields such as tour , navigation, data collection more and more extensive. This article chiefly introduced how to receive GPS signal and how to process GPS data, in which, some serial port program knowledge is involved. In the procedure of process GPS data, NMEA-0813 data format is introduced, which is the most common GPS data format.更多还原