# This is similar to the mavlink message ATTITUDE_QUATERNION, but for onboard useuint64 timestamp # time since system start (microseconds)uint64 timestamp_sample # the timestamp of the raw data (microseconds)float32[4] q # Quaternion rotation from the FRD body frame to the NED earth framefloat32[4] delta_q_reset # Amount by which quaternion has changed during last resetuint8 quat_reset_counter # Quaternion reset counter# TOPICS vehicle_attitude vehicle_attitude_groundtruth external_ins_attitude# TOPICS estimator_attitude