Product Manual

Table Of Contents
XT3182D Product Manual
Page 19 | 37
CONFIDENTIALAND PROPRIETARY
4.19. HP (GPS PDOP)
GPS PDOP. Position (3-Dimensional) Dilution of Precision.
Parameter Data Presentation
HP
Parameter Type Description
HP UINT8 PDOP in tenths.
DOP
Value
Rating Description
< 10 Ideal Highest possible confidence level used for
applications demanding the highest possible
precision.
10-20 Excellent At this confidence level, positional measurements
are considered accurate enough to meet all but
the most sensitive applications.
20-50 Good Represents the minimum appropriate level for
making business decisions. Positional
measurements could be used to make reliable in-
route navigation suggestions to the user.
50-100 Moderate Positional measurements could be used for
calculations, but the fix quality could still be
improved. A more open view of the sky is
recommended.
100-200 Fair Represents a low confidence level. Positional
measurements should be discarded or used only
to indicate a very rough estimate of the current
location.
200 255 Poor At this level, measurements are inaccurate by as
much as 300 meters with a 6-meter accurate
device (50 DOP * 6 meters) and should be
discarded.