Tune into any TV weather report and you’ll hear the words “Doppler radar” as meteorologists track storms across California. But how does Doppler radar work? And how accurate is it? The concept of ...

Dual-pol doppler radar is a relatively new upgrade to the original doppler radar technology and towers that the National Weather Service offices around the U.S. use. The upgrade helps better determine ...

Radar technology is mainly known for generating weather data and for the surveillance of aircraft. Less well known are its applications in the study of migratory birds, bats, and insects, which ...

Most aircraft carrying Doppler radar look like they've grown a tail, developed a dorsal fin, or sprouted a giant pancake on their backs. But when the unmanned Global Hawk carries a radar system this ...

The purpose of a Doppler ultrasound is to check blood flow. Doctors use the findings to help determine whether there is a blockage, narrowing, or leakage in a blood vessel. Healthcare professionals ...

Except for the continuous Doppler mode, pulses of high-frequency sound waves are applied to the relevant area of the body, and the reflected echoes are used to generate an image. High frequency for ...

Ultrasound finds use in noninvasive imaging in cardiac, obstetric, gynecologic, and other diagnostic areas. What’s inside this tool that is playing an expanding role in today’s medical world? The ...