Product Manual

Geospatial information

This message provides standard NMEA-formatted positional information, including latitude,

longitude, altitude, course, and speed. Geospatial information messages can be

enabled/disabled using the $GN or $OP command.

$GN <latitude>,<longitude>,<altitude>,<course>,<speed>*xx

Parameter

Description

latitude

Latitude in d.ddddddd format (float). The latitude is presented in the N

basis (negative latitudes are in the southern hemisphere)

longitude

Longitude in d.ddddddd format (float). The longitude is presented in the E

basis (negative longitudes are in the western hemisphere)

altitude

Altitude in meters to one decimal point (float)

course

Course in degrees to one decimal point (0..359.9) (float). Course proceeds

clockwise, with 0.0=north, 90.0=east, 180.0=south, and 270.0=west

speed

Speed in kilometers per hour to one decimal point (0.0..999.9) (float)