BARO2_WCF_ parameters

7 parameters in the BARO2_WCF_ family. ArduCopter 4.7 only — other vehicles share many of these names but not always the same ranges or meanings.

BARO2_WCF_BCK

Pressure error coefficient in negative X direction (backwards)

This is the ratio of static pressure error to dynamic pressure generated by a negative wind relative velocity along the X body axis. If the baro height estimate rises during backwards flight, then this will be a negative number. Multirotors can use this feature only if using EKF3 and if the EK3_DRAG_BCOEF_X and EK3_DRAG_BCOEF_Y parameters have been tuned.

Range

-1.0 to 1.0

Increment

0.05

User level

Advanced

BARO2_WCF_DN

Pressure error coefficient in negative Z direction (down)

This is the ratio of static pressure error to dynamic pressure generated by a negative wind relative velocity along the Z body axis. If the baro height estimate rises above truth height during descending flight (or forward flight with a high backwards lean angle, eg braking manoeuvre), then this should be a negative number. Multirotors can use this feature only if using EKF3 and if the EK3_DRAG_BCOEF_X and EK3_DRAG_BCOEF_Y parameters have been tuned.

Range

-1.0 to 1.0

Increment

0.05

User level

Advanced

BARO2_WCF_ENABLE

Wind coefficient enable

This enables the use of wind coefficients for barometer compensation

User level

Advanced

Values

Value

Meaning

0

Disabled

1

Enabled

BARO2_WCF_FWD

Pressure error coefficient in positive X direction (forward)

This is the ratio of static pressure error to dynamic pressure generated by a positive wind relative velocity along the X body axis. If the baro height estimate rises during forwards flight, then this will be a negative number. Multirotors can use this feature only if using EKF3 and if the EK3_DRAG_BCOEF_X and EK3_DRAG_BCOEF_Y parameters have been tuned.

Range

-1.0 to 1.0

Increment

0.05

User level

Advanced

BARO2_WCF_LFT

Pressure error coefficient in negative Y direction (left)

This is the ratio of static pressure error to dynamic pressure generated by a negative wind relative velocity along the Y body axis. If the baro height estimate rises during sideways flight to the left, then this should be a negative number. Multirotors can use this feature only if using EKF3 and if the EK3_DRAG_BCOEF_X and EK3_DRAG_BCOEF_Y parameters have been tuned.

Range

-1.0 to 1.0

Increment

0.05

User level

Advanced

BARO2_WCF_RGT

Pressure error coefficient in positive Y direction (right)

This is the ratio of static pressure error to dynamic pressure generated by a positive wind relative velocity along the Y body axis. If the baro height estimate rises during sideways flight to the right, then this should be a negative number. Multirotors can use this feature only if using EKF3 and if the EK3_DRAG_BCOEF_X and EK3_DRAG_BCOEF_Y parameters have been tuned.

Range

-1.0 to 1.0

Increment

0.05

User level

Advanced

BARO2_WCF_UP

Pressure error coefficient in positive Z direction (up)

This is the ratio of static pressure error to dynamic pressure generated by a positive wind relative velocity along the Z body axis. If the baro height estimate rises above truth height during climbing flight (or forward flight with a high forwards lean angle), then this should be a negative number. Multirotors can use this feature only if using EKF3 and if the EK3_DRAG_BCOEF_X and EK3_DRAG_BCOEF_Y parameters have been tuned.

Range

-1.0 to 1.0

Increment

0.05

User level

Advanced