Altimeter Configuration
Table 15.9 — Common altimeter settings
Parameter
Default
Value
Description
[ALTIMETER]
MAX_ALTITUDE_M
20
Max altitude value, m
MIN_ALTITUDE_M
0.5
Min altitude value, m
ZERO_LEVEL_M
0
Altimeter position above ground level,
m
IGNORE_ERRORS
0
Maximum number of ignoring fails
received in a row
FILTER_TYPE
NONE
Type of filtering used for altimeter data
• NONE: no filtering be applied
• LP: low-pass filter
• EF: estimator filter
EF_FILTER_GATE
3
Innovation consistency gate size (STD).
Determines how many standard
deviations can me accepted before
mesurments may be considered as
invalid. Available values: 1.0-10.0
EF_FILTER_PROC_NOISE
0.5
Process noise for terrain offset, m/s.
Less values will softer result greater.
Range 0.1 - 1.0
EF_FILTER_RNG_NOISE
0.2
Altimeter noise. Less values for more
precise sensor, m. Range 0.01 - 0.4
EF_FILTER_TERR_GRAD
0.1
Expected terrain gradient, m/m. Less
value for more flat surfaces. Range 0.0 -
1
LP_FILTER_LENGTH
0
(experimental option) Low-pass filter
length. Available options are: 0 (filter
disabled), 8, 12, 16, 20, 24, 28, 32
Altimeter Configuration
UgCS SkyHub User Manual
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Revision 5 • November 2021