Doppler system

With a tornado in the middle of the night, at least you have a Doppler system."

Doppler systems are light enough for mobile ground surveillance associated with infantry and surface ships.

The Doppler system can warn before the plane enters the hazardous air and in many cases avert it.

Doppler systems involve velocity measurements similar to the kind of measurements made using a strobe light.

The principal engineer of the Doppler system, Mark Miglietta, said his office had received several calls from residents.

The Doppler system, like highway radars, can detect both winds that are approaching and those that are moving away.

The radial velocity of the reflector is determined directly in Doppler systems by measuring the frequency of the reflector over the short span of time associated with detection.

But problems with wet cameras should not have prevented CBS from providing a couple of looks at weather radar (can a Doppler system co-exist with a Telestrator?)

The terminology "Doppler ultrasound" or "Doppler sonography", has been accepted to apply to both pulsed and continuous Doppler systems despite the different mechanisms by which the velocity is measured.

C&NS manufactures avionics communications and navigation products including altimeters, landing systems and Doppler systems, and also provides advanced network engineering and communications systems readiness and sustainment.

"I think there's going to be a movement towards more routine testing - not invasive testing, but using this Doppler system in earlier stages, before they even get symptoms, to perhaps pick this up," Altchek said.

A nearby Weather Service radar station was recently dismantled, leaving his station's Doppler system - sophisticated radar that allows a meteorologist to gauge wind speed and the storm's severity and perhaps predict its path - as the only one left for people in the immediate area.

Two basic signal processing techniques are applied, each offering its own advantages: Time-Domain Reflectometry (TDR) which is a measurement of time of flight divided by the speed of light, similar to ultrasonic level sensors, and Doppler systems employing FMCW techniques.

All patients underwent ultrasonographic evaluation and portal hypertension was assessed according to established crieria, including an enlarged portal vein, absence of variations with respiratory movements, splenomegaly, portal venous collaterals, recanalisation of the umbilical vein, and detection of hepatofugal flow with a real time/Doppler system.