GPS信息提取程序，可以提取GPGGA、GPRMC和GPGSA三种数据，可以根据NIMA格式标准增加提取其它的GPS信息-GPS information extraction procedure could extract GPGGA. GPRMC and GPGSA three data NIMA can increase the standard format from the other GPS Information

程序前半部分是提取BMP文件信息,后面是将有效数据按一定格式(一次实际需求XXX)写入文件中 -Procedures for extraction of the first half is a BMP file information, will be followed by valid data according to a certain format (a real demand for XXX) into the document