Ultrasound travels at the speed of sound which is 330 m/s in air ... A pulse of radar is reflected by the storm and returns to the receiver after 3 ms. Time for the radio waves to travel to ...

To overcome those limitations, faster numerical methods for nonlinear wave modeling and simulation in real time are required. Because real radar measurements do not come with the underlying surface ...

Researchers in China have developed a radar that sits on the seabed and can detect and track aircraft flying high above China's intelligence gathering network has achieved a significant technological ...

The technology is far from operational. While similar sensors have proven reliable in detecting low-flying aircraft over shallow waters, the challenge could be far greater in the open sea.

Like most waves in the electromagnetic spectrum ... With some software-defined radio tools, it’s also possible to use radar for tracking aircraft in real-time at home like this DIY radar ...

The flight caused a rare weather phenomenon as it approached Denver International Airport, resulting in brief snowfall detectable on radar.

Chinese researchers have allegedly developed a new kind of acoustic sensor array that could help protect submarines from aircraft.