In order to find targets, either hostile or friendly, a submarine uses both active and passive SONAR, or Sound Navigation and Ranging. Active sonar works by sending out an energy pulse that ...

Lockheed Martin Corporation’s LMT unit Rotary and Mission Systems recently clinched a modification contract to exercise options for the procurement of hardware to support the U.S. Navy’s Sound ...

Underwater acoustics - Acoustical engineers in this specialization concentrate their efforts on sonar, which stands for 'sound navigation and ranging'. In addition to being used on military watercraft ...