JRC J-NAV 500 Instruction Manual page 37

GPS Navigator J-NAV500
Tip HDOP level
A standard for assessing accuracy of position fixing. HDOP is based on the shape formed by the
positions of satellites and the receiver; a good shape yields a low HDOP level and an accurate
position fix value. A poor shape produces a high HDOP level and an inaccurate position value.
A poor geometrical shape produces a high
HDOP level
36
Satellites
A good geometrical shape produces a low
HDOP level