88 Chapter 7 Learn Geode Connect for Android
Geode GNS3 Real-Time Sub-Meter GPS Receiver
NMEA Sentences
You can choose which
NMEA sentences you want
the Geode to receive. In
most instances, the default
NMEA sentences will be
sufficient for your project or
application.
Note: Changes must be
saved in order for them
to remain from screen to
screen. If the save icon in
the lower right corner of
the screen is orange, this
means there has been a
change that needs to be
saved. Tap the save icon to
save changes .
The following list explains the available NMEA sentences:
■ RD1: Correction diagnostic message output
■ DTM: Datum reference
■ GBS: Satellite fault detection used for RAIM
■ GGA: Detailed GPS position information
■ GLL: Latitude and longitude data
■ GNS: Fix data for a single or combined satellite navigation
system
■ GRS: GNSS range residuals
■ GSA: GPS DOP and active satellite information
■ GST: GNSS pseudorange error statistics
■ GSV: GNSS satellites in view
■ RMC: Recommended minimum specific GNSS data
■ RRE: Range residual message
■ VTG: Course over ground and ground speed
■ ZDA: UTC time and date information
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