The SAMPSON uses two planar arrays to provide coverage over only part of the sky; complete coverage is provided by rotating the arrays, essentially similar to the way conventional radar systems operate. This is in contrast to the US AN/SPY-1 system (as used on the "Ticonderoga" class cruiser and "Arleigh Burke" class destroyer) or the Dutch APAR system (as used on the Royal Netherlands Navy's "De Zeven Provinciën" class frigates, the German Navy's "Sachsen" class frigates, and the Royal Danish Navy's "Ivar Huitfeldt" class frigates), which use multiple arrays fixed in place to provide continuous coverage of the entire sky.