GLOBALSAT GH-615 User Manual - Manual (Page 49)

GH-615
Page 49
Glossary
Activity
Relates to data being transmitted from GH-615. Activity is a
history or log of events. Activity data includes time or distance
updates.
Waypoint
Waypoints are sets of coordinates that identify a point in
physical space. For the purposes of terrestrial navigation,
these coordinates usually include longitude and latitude, and
sometimes altitude (particularly for air navigation).
Trackpoint
The current moving trace.
Navigation
The act of determining the course or heading of movement.
2D Operating
Mode
A two-dimensional GPS position fix that includes only
horizontal coordinates. It requires a minimum of three visible
satellites.
3D Operating
Mode
A three-dimensional GPS position fix that includes horizontal
coordinates, plus elevation. It requires a minimum of four
visible satellites.
Weak Signal
GPS signal is weak (GPS is fixing).
Receiving
Can’t find GPS (GPS turned off or broken down).
WAAS/EGNOS Wide Area Augmentation System / European Geostationary
Navigation Overlay Service. These are two satellite-based
systems that can be used to increase the accuracy of GPS
position fixes.
IPX7
An IPX7 designation means the GPS case can withstand
accidental immersion in one meter of water for up to 30
minutes.