A single SPY-1 multi-function radar system is unique in that it replaces numerous conventional stovepiped sensors resident on ships in the fleet today. Some of these sensors include:
* Long range volumetric search radar
* High data rate horizon search radar
* Surface search radar
* Fire control quality tracking radars
The result is a more integrated and higher capability sensor and weapon system that reduces system reaction time, enhances firepower, rejects unwanted interference and ensures safe and reliable operations. The S-band frequency range allows these systems to maintain their level of performance in all-weather operations, perform all major radar functions in a single aperture, and perform proven S-band mid-course guidance for semi-active missiles such as ESSM and SM-2.