Definitions for "HDOP"
Horizontal Dilution of Position, a figure of merit for describing optimum satellite distribution in GPS and DGPS.
orizontal ilution recision is a measure of the uncertainty of the navigation solution in the local horizontal plane.
orizontal ilution recision The assessment of the amount of possible inaccuracy in a GPS fix due to the poor relative placement, in the horizontal plane, of the received satellites being used to calculate the fix.
Similar to GDOP, except that elevation factors are ignored.