| After we provided the ship with a surface-surveillance picture, we started rebasing our night doppler approaches. |
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| Cyclone detection doppler radars are replacing the conventional analogue radars in important locations along the east coast. |
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| When any part of the radio wave is reflected to the fuze from the target, an interaction or doppler signal occurs between the reflected transmitted wave. |
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| Multiplane transesophageal echocardiographic doppler imaging accurately determines cardiac output measurements in critically ill patients. |
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| The HAC selected doppler to read groundspeed, and he continued the climb-out to 1,000 feet. |
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| A smaller, portable machine called a Doppler uses ultrasound for intermittent monitoring. |
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| After acquiring Doppler sounds at the palmar arch, the RNFA occludes the radial artery flow. |
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| Horseshoe bats have a special kind of echolocation, which allows them to use the Doppler shift to detect the flutter of moth wings. |
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| The instructor had been navigating over the mountains with Doppler and had the coordinates of the airport plugged into the system. |
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| Synth notes bob, bend and warble, producing a strange, droning, Doppler effect, whizzing past the listener like vehicles on a Tron superhighway. |
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| That pulsars are part of a binary system is indicated by Doppler shifts in the pulse period and the change in arrival time of the pulse. |
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| In colour flow sonography, pulsed Doppler signals are used to produce the images. |
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| The sound reached a crescendo, then trailed off to the south in a quickly fading Doppler echo. |
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| This determination assumes the variation of the redshift is indeed a Doppler effect due to motion of the star. |
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| Laser Doppler velocimetry has been successfully applied to the measurement of speeds of everything from blood corpuscles to rolled steel. |
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| In countries outside the United States, Doppler flow velocimetry is used to monitor uteroplacental blood flow. |
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| The diagnosis can be confirmed by investigations such as MRI scans, Doppler ultrasonography, and venography. |
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| A venous Doppler study confirmed venous thrombosis of the deep femoral vein. |
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| A blood pressure cuff and hand-held Doppler stethoscope are required to perform this test. |
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| The Doppler effect is a change in the frequency of sound waves caused by moving objects. |
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| Current systems rely on Doppler radar with a dish antenna that rotates to scan the surrounding terrain. |
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| Down on the ground, 162 Doppler radar stations around the United States read atmospheric conditions as close to earth as possible. |
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| Now, physicists in England have demonstrated a topsy-turvy Doppler shift in which a radio wave's frequency rises as the source recedes. |
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| Knowledge of Doppler flow velocimetry of the foetal MCA may assist in perinatal diagnosis and management of complicated pregnancies. |
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| I am looking for any information on the Doppler radars and the effects of microwave radiation. |
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| This causes a periodic Doppler shift of the spectrum of one or both members of the pair. |
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| For Doppler cooling, we need another detail from quantum mechanics, and a bit of relativity. |
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| Basically the Doppler effect is that pitch increases the closer something gets to you, and it decreases the further away it gets. |
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| By analogy, the electromagnetic radiation emitted by a moving object also exhibits the Doppler effect. |
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| The tracing shown below demonstrates the pulsatile velocities of red blood cells over time as shown using Doppler ultrasound technology. |
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| On each orbit, the planets pull the star slightly, which can be detected by the Doppler effect. |
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| This leads to some very interesting consequences, such as the reversal of the Doppler shift for radiation, and the reversal of Cherenkov radiation. |
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| A colour Doppler ultrasound scan done two weeks later confirmed the lesion to be of vascular origin with multiple draining channels and arterialisation of veins. |
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| Doppler was incorrect regarding light being a longitudinal wave. |
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| Both model macrometer surveyors use the same unique antenna which virtually eliminates the multipath problem experienced by the Doppler satellite receivers. |
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| In 1842 Doppler proved that the colour of a luminous body, like the pitch or note of a sounding body, must be changed by velocity of approach or recession. |
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| In fact Fresnel had already published his theory that light was a transverse wave but, although Doppler had read Fresnel's work, he did not accept it. |
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| Electrocardiography, stress electrocardiography, echocardiography and cardiac scan with dipyridamole test, as well as carotid Doppler ultrasonography, showed no abnormalities. |
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| In the astronomical setting, the Doppler effect applies to light. |
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| Just as we can't tell if we'll hit a microburst and plunge down 300 feet unless we have Doppler radar, we also don't know what the EM environment is unless we measure it. |
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| In the type of ultrasound examination called Doppler velocimetry, a hand-held transducer uses sound waves to measure patterns of fetal blood flow. |
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| The inverse Doppler effect is not something you can hear, but understanding it could one day lead to important advances in optics and communications equipment. |
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| Using an audible Doppler flowmeter or color duplex imaging, as necessary, the location of the origin of the branch to the parascapular flap can be predetermined. |
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| A relative contraindication is the presence of carotid bruits, which should be evaluated by Doppler ultrasonography before proceeding with massage. |
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| A reduced Doppler shift also enhances the effectiveness of chaff and decoys, which should allow the aircraft to break lock and hide in ground clutter. |
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| In heterodyne SLDV, a scanned laser beam incident on the vibrating test surface undergoes a Doppler radial frequency shift proportional to the instantaneous velocity. |
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| Colour flow and Doppler features permit identification of vascular, ductular, and cystic structures. |
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| Vehicles and weather moving parallel to the radar beam produce the maximum Doppler frequency shift. |
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| This signal processing is similar to that used in speed detecting Doppler radar. |
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| In interpreting radar images, an isodop is a line of equal Doppler velocity, and an isoecho is a line of equal radar reflectivity. |
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| The Doppler effect is only able to determine the relative speed of the target along the line of sight from the radar to the target. |
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| Radial movement is usually linked with Doppler frequency to produce a lock signal that cannot be produced by radar jamming signals. |
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| Within hours they realized that, because of the Doppler effect, they could pinpoint where the satellite was along its orbit. |
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| They then receive echoes back at the finely tuned frequency range by taking advantage of the Doppler shift of their motion in flight. |
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| The Doppler shift of the returning echoes yields information relating to the motion and location of the bat's prey. |
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| These bats must deal with changes in the Doppler shift due to changes in their flight speed. |
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| The Vector Measuring Current Meter and the Acoustic Doppler Current Profiler are both used to measure current. |
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| A radar gun fires microwave pulses at a car and measures the Doppler shift of the reflected signal to calculate its velocity. |
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| Relying on an ultrasteady radio signal from Huygens to Cassini, the Doppler Wind Experiment will measure the strength of Titan's wind. |
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| Redshift results from the Doppler effect, the same phenomenon that causes the siren on a fire truck to drop in pitch as the truck passes. |
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| Color and power Doppler are limited in their ability to evaluate perfusion of the renal cortex. |
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| The unit comes with either a bidirectional 4-MHz or 8-MHz frequency continuous wave Doppler transducer. |
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| Application of the Doppler ultrasound bloodflow detector in supraclavicular brachial plexus block. |
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| Carotid Doppler ultrasonography showed complete occlusion of the right common carotid artery and internal carotid artery. |
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| Deltex Medical Group has introduced its initial open access Oesophageal Doppler Monitoring e-learning courses. |
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| At 26 weeks and 3 days, on clinical suspicion of oligohydramnios, ultrasound with Doppler was performed. |
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| Tenders are invited for A Laser Doppler Velocimeter System Is Used For Real-Time In-Situ Velocity Or Simultaneous Velocity Measurements. |
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| In January 2003, a Nortek acoustic Doppler velocimeter was placed in the middle of a seeded mussel raft at a 5-m depth for a period of 5 days. |
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| Doppler ultrasonography verified an acute nonocclusive deep vein thrombosis in his left superficial femoral vein. |
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| Thus classically there is decreased color and Doppler flow to the ovary, but with detorsion, this pattern is reversed. |
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| Myocardial functions can be evaluated using tissue Doppler parameters as well as conventional echocardiographic methods. |
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| The mortality benefit is probably directly tied to the reduction in cesareans associated with Doppler imaging. |
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| Equipment such as a Doppler machine is used to assess circulatory problems which may be contributing to patient symptoms. |
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| Use of Doppler ultrasonography in the early detection of NOMI has not been reported. |
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| The subject of the contract is a LIDAR wind instrument based on the Doppler shift and the use of a pulsed laser. |
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| Lu et al proposed an algorithm known as D-Sync, leverages the Doppler shift in underwater environment to do time synchronization. |
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| It leverages the property of the Doppler shift, which is the change of a wave as its source moves relative to the observer. |
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| Doppler shift caused by skin acceleration was recorded during each procedure. |
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| He begins with special relativity, including Lorentz transformations and the Doppler shift. |
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| Gestures result in very small Doppler shifts, and WiSee detects those shifts and translates them into commands. |
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| Doppler shift depends upon whether the radar configuration is active or passive. |
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| An alternative method is to use a fetal heart rate monitor with a Doppler ultrasound probe to detect the fetal heart. |
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| Despite the acceptance of the Doppler redshift described by Hubble's law, there are problems with this model. |
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| Regional cerebral blood flow was monitored by laser Doppler flowmetry with the use of a flexible probe over the skull as described earlier. |
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| One is the assessment of the vascularity of masses and the other is the identification of vague breast masses using power Doppler vocal fremitus. |
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| The Doppler frequency shift for active radar is as follows, where. |
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| Laser Doppler flowmetry is a non-invasive method of measuring blood flow by using the Doppler shift in laser light scattered by moving erythrocytes. |
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| Then researchers measured finger blood flow with laser Doppler flowmetry, a non-invasive technique for gauging blood circulation on a microscopic level. |
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| They are based on the first 500 participants in the Combined Transcranial and Extracranial Venous Doppler Evaluation study, which began last April. |
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| Hubble's law and the Doppler effect, observed in nearby stars, suggested that stars moving away shift toward red, and the faster the stars move away, the greater the shift. |
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| That's the Doppler effect, and it also occurs for electromagnetic radiation, enabling police to catch speeders with radar guns and astronomers to determine distances to stars. |
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| Therefore all spectral changes over a cycle must be known, including Doppler shifts due to trap rotation, and this is a difficult experimental task. |
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| Keck was able to measure tiny changes in the star's spectrum, called Doppler shifts, caused by the telltale tug exerted by the orbiting planet on the star. |
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| Further, the product segment of blood flow measurement devices market has been segmented into ultrasonic Doppler, laser Doppler and electromagnetic. |
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| In particular, many consider the significance of Vesto Melvin Slipher's 1912 astrometric research at the Lowell Observatory on Doppler shift in a spiral nebula. |
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| The width of a spectral line reflects velocity dispersion of the gas and shows up due to the Doppler effect caused by a distribution of the velocities of gas molecules. |
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| Since the positrons are thermalized, the Doppler broadening measurements provide information about the momentum distributions of electrons at the annihilation site. |
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| Due to the Doppler effect, this radial velocity change induces a shift of the star's spectrum towards longer wavelengths as it moves away and a blueshift as it approaches. |
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| Karwe and Sernas reported the application of laser Doppler anemometry to measure velocity distributions in a twin-screw extruder using model fluids. |
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| This introduces FM modulation which degrades Doppler performance. |
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| Commissioning of the high performance computing system has provided opportunity to assimilate satellite radiance, Doppler Weather Radar, OCEANSAT data etc. |
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| As an example, Moving Target Indication can interact with Doppler to produce signal cancellation at certain radial velocities, which degrades performance. |
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| Acoustic Doppler Current Profiler, Doppler Current Meter, Acoustic Doppler Profiler or Acoustic Doppler Velocimeter, applies the Doppler effect to measure flow velocity. |
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| If the object is moving either toward or away from the transmitter, there is a slight equivalent change in the frequency of the radio waves, caused by the Doppler effect. |
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| The vehicle navigation relies on a satellite-based GPS receiver, a fluxgate compass, a 3-axis inclinometer, a pressure sensor, and a Doppler velocity log. |
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