Universal Time Coordinated (UTC)— The time of day at the prime meridian (0º longi-
tude) in Greenwich, England.
Universal Transverse Mercator- (UTM)— A grid coordinate system that projects global
sections onto a flat surface to measure position in specific zones.
Velocity Made Good (VMG)—The speed you are travelling in the direction of the desti-
nation.
Waypoint—A specific location saved in the receiver’s memory.
78
NORTH
“ACTIVE FROM”
WAYPOINT
NORTH
DTK
CROSSTRACK ERROR
XTK
B
R
G
C
O
G
SPEED OVER GROUND
DISTANCE
“ACTIVE TO”
WAYPOINT
SECTION
E
APPENDIX
Glossary
gps 130 7/23/98 9:23 AM Page 78
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