AVD_ parameters

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

AVD_ENABLE

Enable Avoidance using ADSB

Enable Avoidance using ADSB

User level

Advanced

Values

Value

Meaning

0

Disabled

1

Enabled

AVD_F_ACTION

Collision Avoidance Behavior

Specifies aircraft behaviour when a collision is imminent

User level

Advanced

Values

Value

Meaning

0

None

1

Report

2

Climb Or Descend

3

Move Horizontally

4

Move Perpendicularly in 3D

5

RTL

6

Hover

AVD_F_ALT_MIN

ADS-B avoidance minimum altitude

Minimum AMSL (above mean sea level) altitude for ADS-B avoidance. If the vehicle is below this altitude, no avoidance action will take place. Useful to prevent ADS-B avoidance from activating while below the tree line or around structures. Default of 0 is no minimum.

Units

m

User level

Advanced

AVD_F_DIST_XY

Distance Fail XY

Closest allowed projected distance before F_ACTION is undertaken

Units

m

User level

Advanced

AVD_F_DIST_Z

Distance Fail Z

Closest allowed projected distance before BEHAVIOUR_F is undertaken

Units

m

User level

Advanced

AVD_F_RCVRY

Recovery behaviour after a fail event

Determines what the aircraft will do after a fail event is resolved

User level

Advanced

Values

Value

Meaning

0

Remain in AVOID_ADSB

1

Resume previous flight mode

2

RTL

3

Resume if AUTO else Loiter

AVD_F_TIME

Time Horizon Fail

Aircraft velocity vectors are multiplied by this time to determine closest approach. If this results in an approach closer than F_DIST_XY or F_DIST_Z then F_ACTION is undertaken

Units

s

User level

Advanced

AVD_OBS_MAX

Maximum number of obstacles to track

Maximum number of obstacles to track

User level

Advanced

AVD_W_ACTION

Collision Avoidance Behavior - Warn

Specifies aircraft behaviour when a collision may occur

User level

Advanced

Values

Value

Meaning

0

None

1

Report

AVD_W_DIST_XY

Distance Warn XY

Closest allowed projected distance before W_ACTION is undertaken

Units

m

User level

Advanced

AVD_W_DIST_Z

Distance Warn Z

Closest allowed projected distance before BEHAVIOUR_W is undertaken

Units

m

User level

Advanced

AVD_W_TIME

Time Horizon Warn

Aircraft velocity vectors are multiplied by this time to determine closest approach. If this results in an approach closer than W_DIST_XY or W_DIST_Z then W_ACTION is undertaken (assuming F_ACTION is not undertaken)

Units

s

User level

Advanced