LIG Nex1 SPS-550K

SPS-550K is a South Korean naval air and surface surveillance radar associated with LIG Nex1. Janes identifies the Incheon-class frigates as equipped with LIG Nex1's SPS-550K S-band 3D medium-range radar, and LIG Nex1 corporate material places radar and ISR systems among the company's key defense businesses. The current radar-systems category is appropriate.

A shipboard 3D radar gives a combat system range, bearing, and elevation data for aircraft and surface contacts. SPS-550K's value lies in feeding situational awareness and weapon-control networks rather than acting alone. As with any naval radar, performance depends on installation, combat-system integration, electronic-countermeasure resistance, and maintenance.

A domestic naval radar reduces dependence on imported systems and supports sustainment across Korean ship classes. It also reflects South Korea's broader move toward local combat-system integration. The page should frame the radar as a sensor node in a ship combat system, not as a standalone weapon.