应用LabVIEW设计卫星定位显示与座标转换系统.PDF

LabVIEW GPS (Global Positioning System) (GIS)GPS NMEA-0183 WGS84TWD97 RS-232 (GSM/GPRS)PC LabVIEW V7.0(GUI) GPS (GPS) (NMEA) (GSM/GPRS) (WGS84) (TWD97) LabVIEW Protocol on GPS Tracking and Coordination Transform Chih-Yeh King Abstract Nowadays, there was a major upsurge of interest in the GPS/GIS as the most cost-effective way to provide the accurate and reliable positioning for military and civil applications. Consequently, it plays a very important role in the mapping application. The international GPS manufacturers basically follow the NMEA-0183 specifications to implement the user s location, although they adopted different system firmware. In this study, we try to develop a real-time protocol for acquainting WGS84 datum and transforming it to TWD97 system. Conclusively, this research task would rather emphasize how to handle the RS-232 interfacing problem and to manipulate the data communicating through a GSM/GPRS modem to a PC platform. Using a LabVIEW V7.0 GUI program, the real-time protocol can functionally manipulate the corresponding GPS data processing, monitoring, and coordinate transforming in all its desire aspects. Key Words: GPS (Global Position System), NMEA (National Marine Electronics Association), GSM/GPRS (Global System of Mobile Telecommunication), WGS (world Geodetic System). Chih-Yeh king:Assistant Professor, Department of Electrical Engineering, HIT (GPS)