The base reflectivity image is from the lowest "tilt" angle (0.5 ).
One way to measure tilt angle with reference to the earths ground plane, is to use an accelerometer.
In addition to these modifications, the tilt angle of the bogies will be lowered from the current eight degrees.
It is desirable that the compass can operate accurately at significant tilt angles without sticking.
Earth's current tilt angle is approximately 23.5 degrees.
This is all, of course, dependent on what the actual tilt angle is at any given point in time.
"That isn't going to help us figure out the tilt angle," Antoinette said.
"Only the normal accel value times the cosine of your tilt angle."
She'd cut the tilt angle gradually, as the need for side thrust lessened.
Together, these sensors detect the tablet's tilt angle and movement.