? about radar on a sailboat

[skyhawk]

Are these radars in some way self leveling or self tracking?

Radar on a boat is not really something I've ever really operated.
I was just watching a video of a german guy doing a single handed crossing in a rather small boat. (https://youtu.be/65yvgFBAqrw) and he was monitoring a squall at night with radar.
but his little boat was sailing with quite a keel angle + the boat was pitching quite a lot.

How does the radar high up on a mast and swinging back and forth deal with such a changing angle?
I would have expected for targets such as weather, but especially smaller targets like other boats, to be very intermittent...showing only one in a while when the angle is just right

thanks