GPS Localization
P/N 7010-0921
A-21
To isolate the error, disable
horizontal and/or vertical
localization for each Control
Point in turn and observe the set
of errors.
When the errors become
acceptable due to certain
isolation, the point isolated is
most likely to detract from the
quality of the localization.
Also, as a general rule, if error
values of the first few points are
reasonable but increase when a
new point is measured, the point
just measured must have either
inaccurate local site coordinates
or erroneous GPS measurement.
Once a problematic Control Point
is discovered, try to re-measure
the point again to see any
improvement. If it is still suspect
and affects the acceptable
tolerance, the horizontal and/or
vertical localization for this point
may be disabled.
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