«DOPPLER SHIFT»に関連する英語の本
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1
Medical Imaging Physics
Spectral Analysis The Doppler-shift signal contains a wealth of information. One
of the fundamental challenges of Doppler ultrasound is to display that information
in a useful fashion. Doppler shift in a blood vessel is produced by the flow of red ...
William R. Hendee, E. Russell Ritenour, 2003
2
GPS for Land Surveyors, Third Edition
The rate of that change is reflected in the constant variation of the signal's
Doppler shift. But if the receiver's oscillator frequency is matching these variations
exactly, as they are happening, it will duplicate the incoming signal's Doppler
shift and ...
3
High Performance Communication Networks
Relative motion between the transmitter and the receiver causes a shift in the
frequency of the transmitted signal called the Doppler shift. The Doppler shift, /b,
is given by /b = v/A., where v is the relative velocity between the transmitter and
the ...
Jean Walrand, Pravin Pratap Varaiya, 2000
The Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842 in Prague, is the change in frequency of a wave for an observer moving relative to the source of the wave.
Florian Ion Petrescu, 2012
5
Color Duplex Sonography: Principles and Clinical Applications
It follows from the Doppler equation that a Doppler shift does not occur at a
Doppler angle of 90°. At this flow angle the blood -transducer distance is constant
. Blood is then flowing parallel to the transducer and not away from or toward it.
Karl-Jürgen Wolf, Franz Fobbe, 1995
6
Ultrasonography in Vascular Diagnosis: A Therapy-Oriented ...
the Doppler shift increases as the angle decreases (with a maximum cosa of 1 at
a = 0°). The blood flow velocity is calculated by solving the Doppler shift equation
for V: This formula allows one to calculate the blood flow velocity from the ...
B. Herwig, Wilhelm Schäberle, 2010
7
Surgical Ultrasound: An Interdisciplinary Approach for ...
M-mode imaging is particularly useful when examining rapid interface motion,
such as that encountered in cardiac valves. Doppler Imaging The audible and
visual representation of blood flow is based on the so-called Doppler shift. This
refers ...
Ren Mantke, Ulrich Peitz, 2011
8
Sonography Exam Review: Physics, Abdomen, Obstetrics and ...
Doppler Shift • The change in frequency caused by motion. • Difference between
the emitted frequency and the echo frequency returning from moving scatterers. •
Doppler shift is proportional to the flow speed and source frequency. • Doppler ...
9
Glossary of Mapping Science
American Society of Civil Engineers. Doppler count - The number of times the
amplitude of the Doppler shift in a received signal passes from a negative to a
positive value in a specified length of time. The Doppler count is approximately
equal ...
American Society of Civil Engineers, 1994
10
Donald School Textbook of Ultrasound in Obstetrics and ...
S n in in an/ ID Doppler imaging uses color coding to indicate the direction of flow
and different shades of the colors to qualitatively indicate the amount of Doppler
shift. This modality is useful in orientation among tangled blood vessels and can
...
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Notes from the Editors: Highlights from DAMOP 2015
... which appears as a tiny, oscillating Doppler shift in the star's spectrum. The strongest effect comes from large planets close to their stars. «Physics, 7月 15»
The Universe itself
... an experiment where the redshift of photons travelling along a lift shaft was counterbalanced by the Doppler shift of the moving detector. «Nature.com, 7月 15»
How Do You Find the Mass of a Black Hole?
That creates a Doppler shift, a shifting of the light emitted toward the blue and red end of the spectrum. The amount of Doppler shift depends on ... «Slate Magazine, 6月 15»
Logistical issues putting off Doppler radars installation
Doppler effect (or Doppler shift) is the change in frequency of a wave (or other periodic event) for an observer moving relative to its source. «Chandigarh Tribune, 6月 15»
Using Ultrafast Lasers To Look For Earth-like Worlds
A centimeter-per-second velocity shift will leads to a Doppler shift that changes the frequency of visible light by tens of kilohertz, or less than a ... «Forbes, 6月 15»
Remcom's XGtd software calculates effects of wind turbines on radar
Results of the analysis are used to calculate the bistatic radar cross section and Doppler shift from two blade orientations. In addition, the ... «Windpower Engineering, 6月 15»
The "Oort Star" --Did a Rogue Star Pass Through Our Solar System …
Ivanov and collaborators had characterized the recently discovered star through measuring its spectrum and radial velocity via Doppler shift. «The Daily Galaxy, 6月 15»
Contact! LightSail Phones Home
Which TLE represents LightSail is unknown, but each radio chirp's doppler shift helps narrow down the possibilities. The ten ULTRASat ... «The Planetary Society, 6月 15»
Atomic telescope brings atoms to standstill
Likewise, an atom flying towards the laser will observe the light as having a slightly bluer color and won't absorb it. This is the Doppler shift and ... «Ars Technica, 5月 15»
Science by robot: Outfitting the world's “smartest” lake
These devices bounce acoustic waves off particles drifting by, using the slight Doppler shift of the returning waves to calculate velocities at ... «Ars Technica, 4月 15»
