Korean defense company Hanwha Systems unveiled its first prototype of an active electronically scanned array (AESA) radar system for the country’s self-developed next-generation fighter jet that will replace the F-16 and F-15.

That was reported by Yonhap.

The first prototype, comprised of an antenna and power supply, has been produced to verify whether or not the nation is able to go forward with the development of active electronically scanned array (AESA) radar with domestic technology, according to the Agency for Defense Development (ADD).

The development of AESA radar is part of the 8.5 trillion won ($7.5 billion) KF-X project to build 4.5-generation indigenous fighters by 2026 to replace the Air Force’s aging fleet of F-4s and F-5s. The government will invest an additional 10 trillion won ($8.8 billion) to produce 120 aircraft by 2032.

The ADD is supervising the development of the radar, essential equipment that helps a pilot identify friend or foe in battle and finds targets on the ground.

The company showed the prototype to journalists at its research center in Yongin, Gyeonggi Province, during which it gave a demonstration of a transmitting electric wave.