PX4-Autopilot/docs/en/msg_docs/AirspeedValidated.md

pageClass

pageClass
is-wide-page

AirspeedValidated (UORB message)

Validated airspeed.

Provides information about airspeed (indicated, true, calibrated) and the source of the data. Used by controllers, estimators and for airspeed reporting to operator.

TOPICS: airspeed_validated

Fields

Name	Type	Unit [Frame]	Range/Enum	Description
timestamp	uint64	us		Time since system start
indicated_airspeed_m_s	float32	m/s		Indicated airspeed (IAS) (Invalid: NaN)
calibrated_airspeed_m_s	float32	m/s		Calibrated airspeed (CAS) (Invalid: NaN)
true_airspeed_m_s	float32	m/s		True airspeed (TAS) (Invalid: NaN)
airspeed_source	int8		SOURCE	Source of currently published airspeed values
calibrated_ground_minus_wind_m_s	float32	m/s		CAS calculated from groundspeed - windspeed, where windspeed is estimated based on a zero-sideslip assumption (Invalid: NaN)
calibraded_airspeed_synth_m_s	float32	m/s		Synthetic airspeed (Invalid: NaN)
airspeed_derivative_filtered	float32	m/s^2		Filtered indicated airspeed derivative
throttle_filtered	float32			Filtered fixed-wing throttle
pitch_filtered	float32	rad		Filtered pitch

Enums

SOURCE

Name	Type	Value	Description
SOURCE_DISABLED	int8	-1	Disabled
SOURCE_GROUND_MINUS_WIND	int8	0	Ground speed minus wind
SOURCE_SENSOR_1	int8	1	Sensor 1
SOURCE_SENSOR_2	int8	2	Sensor 2
SOURCE_SENSOR_3	int8	3	Sensor 3
SOURCE_SYNTHETIC	int8	4	Synthetic airspeed

Constants

Name	Type	Value	Description
MESSAGE_VERSION	uint32	1

Source Message

Source file (GitHub)

::: details Click here to see original file

# Validated airspeed
#
# Provides information about airspeed (indicated, true, calibrated) and the source of the data.
# Used by controllers, estimators and for airspeed reporting to operator.


uint32 MESSAGE_VERSION = 1

uint64 timestamp  # [us] Time since system start

float32 indicated_airspeed_m_s   # [m/s] [@invalid NaN] Indicated airspeed (IAS)
float32 calibrated_airspeed_m_s  # [m/s] [@invalid NaN] Calibrated airspeed (CAS)
float32 true_airspeed_m_s        # [m/s] [@invalid NaN] True airspeed (TAS)

int8 airspeed_source               # [@enum SOURCE] Source of currently published airspeed values
int8 SOURCE_DISABLED = -1          # Disabled
int8 SOURCE_GROUND_MINUS_WIND = 0  # Ground speed minus wind
int8 SOURCE_SENSOR_1 = 1           # Sensor 1
int8 SOURCE_SENSOR_2 = 2           # Sensor 2
int8 SOURCE_SENSOR_3 = 3           # Sensor 3
int8 SOURCE_SYNTHETIC = 4          # Synthetic airspeed

float32 calibrated_ground_minus_wind_m_s  # [m/s] [@invalid NaN] CAS calculated from groundspeed - windspeed, where windspeed is estimated based on a zero-sideslip assumption
float32 calibraded_airspeed_synth_m_s     # [m/s] [@invalid NaN] Synthetic airspeed
float32 airspeed_derivative_filtered      # [m/s^2] Filtered indicated airspeed derivative
float32 throttle_filtered                 # [-] Filtered fixed-wing throttle
float32 pitch_filtered                    # [rad] Filtered pitch

:::