GPS授时模块和GPS定位模块有什么区别

标准的数据格式是NMEA格式当接收机工作在NMEA协议时，以一定的速率向外输出数据。如$GPGGA,140144.000,2232.2513,N,11401.6763,E,1,04,,20.3,M,,M,,0000*58$GPGLL,2232.2513,N,11401.6763,E,140144.000,A*35$GPRMC,140144.000,A,2232.2513,N,11401.6763,E,9.17,,140703,,*12$GPVTG,,T,,M,9.17,N,17.0,K*47$GPGGA,140148.000,2232.2654,N,11401.6738,E,1,04,,36.1,M,,M,,0000*5F$GPGLL,2232.2654,N,11401.6738,E,140148.000,A*37$GPRMC,140148.000,A,2232.2654,N,11401.6738,E,12.95,,140703,,*20$GPVTG,,T,,M,12.95,N,24.0,K*77其中$GPGGA开头的信息是我们定位时要提取的