About boresight options for sensors of targeted pointing type.

Member	Value	Description
eBoresightHold	0	Hold: rotation about the Y axis followed by rotation about the new X-axis.
eBoresightLevel	1	Level: boresight is aligned with the line of sight to the target, while the sensor's x-axis is constrained to be in the plane parallel to the meridian plane passing through the target.
eBoresightRotate	2	Rotate: rotation about the sensor's or antenna's Z axis by the azimuth angle, followed by rotation about the new Y axis by 90 degrees minus the elevation angle.