Japan will pay about 1 billion US dollars in the next nine years for the joint development of the next-generation interceptor missile with the United States, the Yomiuri Shimbun daily reported Thursday.
The figure is one-third of the total cost of the project, the report said.
Japan plans to introduce a missile defense system consisting of land- and sea-based missiles as early as fiscal 2006.
The next-generation interceptor missile is based on the US SM-3 missile and will be carried on Aegis-equipped destroyers, the daily said. Japan now has four such warships.
In the project, Japan will be responsible for the development of the nose cone and a two-stage starter motor, while the United States will make a kinetic warhead and a device that detects infrared rays to identify and track targets, the paper reported.