从GPS接收机里提取数据，在C++builder中配合地图实现轨迹重现，并显示鼠标所在位置的经纬度-Lane from the GPS receiver to extract data, in which C builder with the locus maps recreated, and display the location of the mouse coordinates

GPS卫星定位读取,基于DSP的GPGGA定位数据提取-GPS satellite positioning to read, based on the DSP-GPGGA positioning data extraction