The Chinese Defence Ministry, in its statement, said that in each incident, the Chinese vessel "kept normal observation and alert, and fire control radar was not used".

BBC: China rejects Japan radar-lock allegation

In January, a Chinese naval vessel fixed its fire-control radar on a Japanese Maritime Self-Defense Forces ship.

WSJ: Michael Auslin: Beijing's Paranoid Worldview

The acquisition of related manufacturing processes can, moreover, be of enormous value to Soviet production of such hardware as missile subassemblies, fire-control systems, radar systems, and computers.

CENTERFORSECURITYPOLICY: Center for Security Policy | Alcatel��s Soviet Joint Venture: A Sale The West Cannot Afford To Make

In addition, the official says, a floating X-band radar has to be modified to track the satellite's trajectory, and the "fire-control" systems on the Navy ships also needed modification.

CNN: Attempt to shoot down spy satellite to cost up to $60 million