The drill will be held in the waters near Hawaii on June 28, said an official at the Seoul's defense ministry, ahead of the US-led Rim of the Pacific naval exercises.
Preparations in 'final stages' for North Korea nuclear test: report
"The training will involve detecting and tracing an imaginary missile from North Korea, but will not include missile interception," said the official.
The US will launch an airplane as a mock-up missile, which all three countries will monitor from ships equipped with an Aegis anti-missile system, Yonhap news agency reported.
The upcoming exercise was proposed at a trilateral military meeting held after the North's long-range rocket launch in February, the official added.
The rocket launch -- held a month after Pyongyang's fourth nuclear test and seen as a disguised ballistic missile test -- drew widespread condemnation and prompted the UN Security Council to slap its toughest sanctions ever on North Korea.
North Korea builds replica of South 'Blue House' for target practice
Existing UN resolutions forbid the North from the use of any ballistic missile-related technology.
Pyongyang responded by launching a series of short-range missiles off its east coast and trying -- although unsuccessfully -- to test-fire a powerful, new medium-range missile in April.
The North has recently claimed a series of major technical breakthroughs in developing what it sees as the ultimate goal of its nuclear drive: an intercontinental ballistic missile capable of delivering a nuclear warhead to the US mainland.
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