Rev #37
Version 8.0
April 2021
Page 93 of 121
7.6.2 Relative Vario
As explained, the EKF estimates all state variables (position, velocity and attitude) jointly. For
this reason, the estimated roll angle is used for the calculation of the circle polar in a post
processing step.
7.6.3 HAWK Parameters
HAWK parameters can be setup in via Setup>Vario Parameters menu. See chapter 5.7.3 for
details. Following parameters can be set there:
• Wind variance SIGWIND: range 0.005 to 0.5 (recommended value: 0.07). See chapter
5.7.3.15.
• Horizontal wind average: range 0.1 to 100sec (recommended value: 30sec). See chapter
5.7.3.16.
• Vertical wind average: range 0.1 to 50 sec (recommended value: 10sec). See chapter
5.7.3.17.
7.6.4 Graphical display
It is recommended to set following display options, when using HAWK system.
In Setup>Graphics>Indicator set both needles to be visible. Set blue needle for HAWK
values and red needle for TEK values. Set vario needle type to vario or relative and SC
needle type to netto or relative.
See chapter 5.7.8.1.2 for details.
7.6.5 Audio source
When HAWK option is activated, audio source can be choose between HAWK or TE vario.
See chapter 5.7.9.2.5 and 5.7.9.2.6 for more details.
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