I am working on simulating a satellite constellation and I keep coming across the term "handover". My general understanding is that a handover is when a ground station switches its connected between two satellites, presumably because one of them is no longer visible and the new one has just come into view. However, this seems to imply a simultaneous transition between the two satellites (i.e. one leaves the visibility windows just as the other enters it). Can a handover technically occur when a single satellite enters/leaves the ground stations view? If so, the every satellite would require two handovers during its connection to the ground network. But this definition is still a bit confusing because a handover implies that the connection is being transferred elsewhere, while with a single satellite the connection would simply be turned off/on.
I have searched everywhere online for a comprehensive definition on this, but I haven't been successful. Thank you!