Attitude Data Messages - CCSDS

CCSDS RECOMMENDED STANDARD FOR ATTITUDE DATA MESSAGES
A4
LOCAL SPACECRAFT BODY REFERENCE FRAMES
The following table enumerates the allowed values for the keyword Q_FRAME_*,
EULER_FRAME_*, SPIN_FRAME_* in the APM and REF_FRAME_* in the AEM
messages, where ‘*’ denotes ‘A’ or ‘B’. These frames will vary from object to object, but
provide a mechanism of denoting different reference frames than the object’s BODY axes to
specify an orientation. It is the responsibility of the end user to have an understanding of the
location of these frames for their particular object, typically via an ICD.
Keyword Value
ACTUATOR_x
Meaning/Description
Actuator reference frame (‘x’ = 0→9): could denote reaction wheels,
solar arrays, thrusters, etc.
CSS_xy Coarse Sun Sensor (‘x’ = 0→9, ‘y’ = 0→9)
DSS_x Digital Sun Sensor (‘x’ = 0→9)
GYRO_x Gyroscope Reference Frame (‘x’ = 0→9)
INSTRUMENT_y Instrument ‘y’ reference frame (‘y’ = A→Z, 0→9)
SC_BODY_x Spacecraft Body Frame (‘x’ = 0→9)
SC_BODY_y
Spacecraft Body Frame of another object (‘y’ = A→Z)
SENSOR_x Sensor ‘x’ reference frame (‘x’ = A→Z, 0→9)
STARTRACKER_x Star Tracker Reference Frame (‘x’ = 0→9)
TAM_x Three Axis Magnetometer Reference Frame (‘x’ = 0→9)
CCSDS 504.0-B-1 Page A-3 May 2008