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pulsed Doppler system

См. также в других словарях:

  • Doppler radar — Doppler effect A Doppler radar is a specialized radar that makes use of the Doppler effect to produce velocity data about objects at a distance. It does this by beaming a microwave signal towards a desired target and listening for its reflection …   Wikipedia

  • Doppler'sches Prinzip — Frequenzänderung durch Dopplereffekt Frequenzänderung bei einem sich bewegenden Objekt Als Dopplereffekt (auch Doppler Effekt) bezeichnet man die Veränderung der wahrgenommenen oder gemessenen …   Deutsch Wikipedia

  • Doppler-Effekt — Frequenzänderung durch Dopplereffekt Frequenzänderung bei einem sich bewegenden Objekt Als Dopplereffekt (auch Doppler Effekt) bezeichnet man die Veränderung der wahrgenommenen oder gemessenen …   Deutsch Wikipedia

  • pulsed wave Doppler echocardiography — echocardiography employing pulsed wave Doppler ultrasonography to record the flow of blood through the cardiovascular system …   Medical dictionary

  • Transcranial doppler — (TCD) is a test that measures the velocity of blood flow through the brain s blood vessels. Used to help in the diagnosis of emboli, stenosis, vasospasm from a subarachnoid hemorrhage (bleeding from a ruptured aneurysm), and other problems, this… …   Wikipedia

  • Pulse-Doppler radar — Pulse Doppler is a radar system capable of not only detecting target location (bearing, range, and altitude), but also measuring its radial velocity (range rate). It uses the Doppler effect to determine the relative velocity of objects; pulses of …   Wikipedia

  • Planar Doppler velocimetry — (PDV), also referred to as Doppler Global Velocimetry (DGV), determines flow velocity across a plane by measuring the Doppler shift in frequency of light scattered by particles contained in the flow. The Doppler shift, Δfd, is related to the… …   Wikipedia

  • Optischer Doppler-Effekt — Frequenzänderung durch Dopplereffekt Frequenzänderung bei einem sich bewegenden Objekt Als Dopplereffekt (auch Doppler Effekt) bezeichnet man die Veränderung der wahrgenommenen oder gemessenen …   Deutsch Wikipedia

  • History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …   Wikipedia

  • Medical ultrasonography — This article is about using ultrasound to image the human body. For imaging of animals in research, see Preclinical imaging. Sonography redirects here. For the tactile alphabet called sonography , see Night writing. Medical ultrasonography… …   Wikipedia

  • Wave radar — Ocean surface waves can be measured by several radar remote sensing techniques. Several instruments based on a variety of different concepts and techniques are available to the user and these are all often called wave radars. This article (see… …   Wikipedia

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