Ellipse
– Operating Handbook
ELLIPSEOHAIR
Aiding
GNSS Configuration
Please check following point at the GPS configuration level:
1.
Choose this parameter depending on the GPS you are using (NMEA, Ublox or Novatel,
Septentrio)
2.
Set up the lever arm of the GPS depending on its position on the aircraft (GNSS
Antenna placement). f your lever arm has been precisely measured within 1-2 cm, or
estimated by Qinertia, you can check the "Primary antenna Lever arm has been
measured precisely" box. This will optimize Kalman filter warmup-time and overal
performance.
3.
Select Rough lever arm if you measured it within 5cm accuracy. If precisely measured
or estimated by Qinertia, you can select "precise lever arm" to optimize filter warm-
up time and performance.
4.
Automatic rejection mode is advised for each parameter. Automatic mode
automatically detects the confidence so the Kalman filter knows it can rely more on a
parameter or less on an other.
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