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 ...

To determine the usefulness of the noninvasive pulsed Doppler in critically ill children, we calculated cardiac output by using this technique and compared the results with values obtained by the ...

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 ...