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SONATA-II is the successor to the SLQ-200K SONATA (Sea Operational system for Navy Acquisition & Tactical Attack) and is scheduled to be installed on existing ships, starting with the KDDX, as well as on future ships.
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The ROKN had previously operated using the U.S.-made APECS system, but in response to the system’s poor performance and the growing threat from North Korea, it completed the development of new naval electronic warfare equipment between 1994 and the early 2000s.
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The newly developed SONATA-II will incorporate the latest digital electronics and intelligent algorithms, expanding its detection frequency range and improving detection accuracy. Furthermore, through the advancement of electronic countermeasure technologies, its capability to counter enemy advanced radars and anti-ship missiles is expected to be significantly enhanced.
