Product Manual

Job Configuration Window
MAGNET Tools ver 1.0
20
General Tab of the Adjustment Properties
In this tab you can select the adjustment parameters in the following
fields:
• Confidence Level field
- the current value of the confidence level
for rejecting suspect observations during adjustment when "Tau
Criterion"is selected in the Rejection Criterion field
. You can set
either 68%, 95%, or 99%. The lower the value of the confidence
level, the lower the Tau_critical value and accordingly the more
suspect observations will be rejected from the adjusted procedure.
The default confidence level is 95%.
• Rejection criterio
n field - the current criterion for rejecting bad
observations. You can select either "By Quality Control" or "Tau
Criterion". The default criterion is "By Quality Control". If you
select the “By Quality Control” test, the application will reject the
following network components from adjustment with residuals
worse than the values set for the current job. These residuals are
calculated in the adjustment process for the closed figures and/or
for repeated observations in the network:
– all plane components of the GPS observations and
distances and/or horizontal angles of the TS observations for
plane adjustment,
– all height components of the GPS observations and vertical
angles of the TS observations for vertical adjustment.
If you select the "Tau Criterion" test, the application will reject
the following network components from adjustment with a Tau
value more than Tau_critical. These residuals are calculated in
the adjustment process for the closed figures and/or for repeated
observations in the network:
– all plane components of the GPS observations and
distances and/or horizontal angles of the TS observations for
plane adjustment,
– all height components of the GPS observations and vertical
angles of the TS observations for vertical adjustment.