We compare the absolute value of the
pressure error field ([P.sub.abs] = [absolute value of [P.sub.analysis] - [P.sub.fnl]]) of the two experiments and give the difference field of the
pressure error [DELTA]P ([DELTA]P = [P.sup.feature.sub.abs] - [P.sup.regular.sub.abs]).
Figure 20 shows the control surface for implementing MFs for static air
pressure error values as well as fuzzy rule-implemented change of error values.
w.c.)
pressure error threshold [[DELTA]OS.sub.max] Maximum number of 7 changes in OS during the previous 60 minutes (moving window) ModeDelay Time in minutes 90 to suspend fault condition evaluation after a change in mode AlarmDelay Time in minutes 60 that a fault condition must persist before triggering an alarm Table 4.
Figure 2 shows the -0.3% to +1.1% possible static
pressure error that can occur if the tap holes are beveled or rounded.
This includes temperature error, stability (drift), static
pressure error and base accuracy.
GPS elevations are available, but can have modest errors (typically [+ or -] 10 m, roughly equivalent to a 1-hPa
pressure error, the typical error variance used in most operational data assimilation systems; see http://gpsinformation.net/main/altitude.htm for a discussion on the vertical errors in GPS-based elevation).
Firstly, we look for more promising norms to measure the
pressure error with improved LBB dependency.
The incorrect Swiss reference was simply a deadline
pressure error which we are happy to correct.
The
pressure error was discovered by the analysis contractor, and Calspan agreed to run another sample at 125 psig (862 kPa), the correct inflation pressure.