Traditional sonar and radar use an echo-based approach, and have been amazingly successful in sensing and tracking vehicles and objects under water, through the air, or even in space. The principle is ...

Driver-assistance features such as adaptive cruise control, automated emergency braking, lane centering, and blind-spot monitoring—which are the building blocks of hands-free driving systems—require a ...

It is an old trope in submarine movies. A sonar operator strains to hear things in the ocean but dares not “ping” for fear of giving away the boat’s location. Radar has a similar problem. If you want ...

Helm space is the most valuable real estate on board, and to get the most navigation gear for the space, choosing from these multifunction displays with integrated sonar is key. These touchscreen ...

A civilian contractor steadies a M18 Mod 2 Kingfish Unmanned Underwater Vehicle (UUV) as it is lifted with a crane onto the deck of an 11-meter rigid-hull inflatable boat. The Kingfish uses side scan ...

Ultrasound travels at the speed of sound which is 330 m/s in air. This is not fast enough to track fast moving aircraft or more distant objects. So, instead of using ultrasound, radio waves are used ...