GPS协议，含有NEMA协议栈可以对90％的GPS模块进行操作，定位数据可以获知，结合图像显示，就可以做导航-GPS agreement, containing NEMA protocol stack can be right 90% of the GPS module for the operation and positioning data can be informed that combine images, it can be done Navigation

GPS NEMA 0183协议（中文）-GPS NEMA 0183 agreement (Chinese)