Even though radar uses electromagnetic waves to detect objects, the same principle has been used with other propagating waves, most often sound waves. While a well-known use of this is sonar ...

This includes the acquisition of interceptor jets, as well as radar and sonar capabilities. Mr Harris was speaking after the opening of a new Defence Forces Cadet School in the Curragh ...

"Our expertise in sonar, radar and electronic warfare, and torpedo defense will provide best-in-class capabilities within the maritime domain." Ultra Maritime has operated in Australia for more ...