Doppler shift


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  • noun

Synonyms for Doppler shift

change in the apparent frequency of a wave as observer and source move toward or away from each other

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References in periodicals archive ?
This is why Doppler shift can be derived without assuming reciprocity postulate (which may be regarded as the "third postulate" of Special Relativity) and without special relativistic argument, see [7].
That would reduce the Doppler shift, permitting the craft to receive more of the probe's radio signals.
When aircraft A emits tracking radar radiations, the ground processing center can determine the position and velocity vector of this aircraft through time arrival difference and Doppler shift difference measurements.
The first moment about zero, mean Doppler shift, [8] is related to the radial motion of particles in the sample volume, and the first moment about the spectrum mean, Doppler frequency dispersion, is a measure of hydrometeor radial velocity dispersion.
The new 60,000-km flyby reduces the Doppler shift of Huygens's signal received by Cassini because the two spacecraft will approach each other at a much lower relative speed.
Target detections are possible within all the shaded areas of Figure 6 or Figure 7 but will be ambiguous in range or Doppler shift or both.
Thus, under these assured conditions including assured system bandwidth, assured total number of carriers, and assured number of uplink access of users, the greater the elevation differences between access mobile users, the greater Doppler shift differences between access mobile users, the more serious multi-user access interference for satellite to ground uplink systems.
Additional information about the object, such as its velocity or material composition, can also be determined by measuring certain properties of the reflected signal, such as the induced Doppler shift.
Dave said, "To our astonishment and exquisite pleasure on 2 December 1957, we heard and tape recorded the Doppler shift as it varied in pitch from near-zero frequency when it was pointed crosswind, to high frequencies when it was pointing either up- or downwind.
With the same reason, if the maximum Doppler shift is known previously, K also can be shortened to [K.
The maximum Doppler shift frequencies were obtained and various ratios were calculated from each vessel.
Here we further analyse the Dai data and extract the RA and Dec of that preferred direction, and relate the data to previous determinations from NASA spacecraft Earth-flyby Doppler shift data, and other determinations [5].
Lu et al (2010) proposed an algorithm known as D-Sync, leverages the Doppler shift in underwater environment to do time synchronization.
Basta may crevices, magkakaroon na ng refraction 'yung signal kasi nagdedetect lang naman ng alteration ng movement 'yung Doppler motion - 'yung Doppler Shift.
Assuming that the transmitter is fixed and the speed of receiver is 1m/s, the Doppler shift will vary between -800 Hz and 800 Hz.