Space & Time - Programming GPS and OpenStreetMap Applications with Java - page 41

GP a GPS receiver
RMC recommended minimum sentence C
134030 universal time coordinated (UTC)
time: 1 pm, 40 minutes and 30 seconds
A data is okay (no warning)
4924.5644 49 degrees and 24.5644 minutes
N North
0842.8216 08 degrees and 42.8216 minutes
E East
0.0 speed (relative to last position and time)
191.3 bearing (0 means headed North)
010302 date 1st of March, 2002 (ddmmyy)
0.2,E magnetic declination
A mode (estimated, differential, simulated, . . . )
*1D checksum of this sentence

Table4.1. The individual elements of the NMEA GPS device GPRMC sentence.

the sky. Thus, some GPS devices have a built-in barometer and compass
to determine elevation and course independently.
Note that bearing, distance, and speed are not generic; this data is de-
rived from GPS information since a GPS provides single point information
only! From the programmer's point of view, GPS basically adds a time
stamp to the GeoPoint and Position information and could be added to
their definitions in the source. On the other hand, both definitions of the
class and interface fulfill their purpose to localize something. Therefore,

GP a GPS receiver
GGA system x data
134028 universal time coordinated (UTC)
time: 1 pm, 40 minutes and 28 seconds
4924.5643 49 degrees and 24.5643 minutes
N North
0842.8212 08 degrees and 42.8212 minutes
E East
1 GPS quality indicator
07 number of satellites in view
1.6 horizontal dilution of precision
0.2,E magnetic declination
200.8 elevation above/below mean sea level
M elevation in meters
47.9 geoidal separation

Table4.2. The individual elements of the NMEA GPS device GPGPA sentence.