doppler system वाक्य
उदाहरण वाक्य
मोबाइल
- Pulse-Doppler systems were first widely used on fighter aircraft starting in the 1960s.
- The Doppler system is expected to change that by giving much more advance notice.
- To distinguish targets from other reflections, it was necessary to use a phase-Doppler system.
- This is a performance limitation for non-Doppler systems.
- Modern Doppler systems are light enough for mobile ground surveillance associated with infantry and surface ships.
- Doppler systems use fixed antennae, like BTDF, but handle the direction finding purely in signal processing.
- The Doppler system can see wind hazards that are undetectable by conventional radar, and it can zero in on them.
- However, lower PRFs introduce other problems, including poorer target painting and velocity ambiguity in Pulse-Doppler systems ( see below ).
- They created circuits used by NASA and military space operations, including products used in the Doppler system for moon landings.
- Doppler systems at D / FW Airport and Dallas Love Field are expected to be on line by late Summer 1995.
- Today's Doppler systems-- the government owns about 115-- are as far ahead of first-generation radar systems as today's computers are ahead of old, clunky mainframes.
- The Doppler system combines information from the current low-level wind-shear sensors and the new radar technology to paint a broader and better picture of wind hazards, Wiggins said.
- 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.
- The Houston Doppler system operates from a 100-foot radar tower, topped with a white, golf ball-like dome, about 12 miles from Houston Intercontinental and adjacent to Hooks Airport.
- Stretching from Alaska to Baffin Island and covering over, the DEW Line consisted of 63 stations with AN / FPS-19 high-power, pulsed, L-Band radars, most augmented by AN / FPS-23 pulse-Doppler systems.
- A contract was awarded to Raytheon Corp . in 1988 to build 47 Doppler systems, but Houston's is the first in the $ 364 million program to be used by air traffic controllers.
- 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.
- "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,"
- These sophisticated radars already can spot a small flock of birds or a swarm of insects, says Donald Burgess, an expert on Doppler systems for the National Severe Storms Prediction Center in Norman, Okla . And they can spot tornadoes inside of clouds.
- The new radar is so high-tech that controllers don't need to interpret it; a computer does that automatically, said Jim Sanzone, a senior FAA engineer from Oklahoma City who was on hand this week in Houston for final tests of the Doppler system.
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