Get the NMEA HDOP(relative accuracy) from the NMEA $GPGGA sentence

Horizontal Dilution of Precision (HDOP) is returned in the $GPGGA NMEA sentence .

To read HDOP value,

  • Using the AT Command Tester tool, parse the $GPGGA NMEA sentence from the GPS device
  • The NMEA HDOP value is automatically parsed and displayed in the device.
  • The HDOP value can be 1 or less. When HDOP value is 1, the precision is good.

Learn more on how to use NMEA in the NMEA GPS tutorial.

Keywords: Module NMEA HDOP, M2M NMEA HDOP, GPRS NMEA HDOP, 3G NMEA HDOP, NMEA HDOP through AT commands,