实现了PDA对手持型gps的导航设计。用一个串口类控制串口通讯，通过对接收的GPS数据分析导航信息。

GPS 速度计算算法实现，并有实测数据，与汽车的码表相比，算法在40公里每小时比较准确- GPS speed calculation algorithm, and the measured data, compared with the vehicle code table, the algorithm more accurate in 40 km/h

ARM研究平台LINUX操作系统QT开发GPS数据通过RFID发送-The LINUX operating system platform based on ARM QT development GPS data sent by RFID