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- ...se that produces signal cancellation. This phenomenon also has detrimental effects on moving target indicator systems, where the detection scheme subtracts si * Pulse-Doppler Radar ...4 KB (636 words) - 11:38, 7 November 2024
- {{distinguish|Doppler ultrasound}} ...hnique to reconstruct these structures on the stellar surface is called '''Doppler-imaging''', often based on the [[Principle of maximum entropy|maximum entro ...7 KB (1,065 words) - 23:30, 16 November 2024
- The '''Doppler parameter''', or '''Doppler broadening parameter''', usually denoted as <math>b</math>, is a parameter The Doppler parameters of [[Lyman-alpha forest]] absorption lines are in the range 10–1 ...3 KB (432 words) - 03:32, 20 August 2024
- The '''photoacoustic Doppler effect''' is a type of [[Doppler effect]] that occurs when an [[Intensity modulation|intensity modulated]] [ ...ht ] /2</math><ref name=prl>H. Fang, K. Maslov, L.V. Wang. "Photoacoustic Doppler Effect from Flowing Small Light-Absorbing Particles." Physical Review Lette ...10 KB (1,420 words) - 22:47, 6 May 2022
- ...ed, remained on the display. These were subject to a wide variety of noise effects that made them useful only for strong signals, generally for aircraft or sh ...rent signals also allowed for the direct measurement of velocity via the [[Doppler shift]] of a single received signal. This can be fed into a [[bandpass filt ...10 KB (1,627 words) - 16:45, 19 July 2022
- ...er the source or the observer is moving, which later has been coined the [[Doppler effect]]. The [[s:de:Über das farbige Licht der Doppelsterne und einiger an ...l to v/c, the ratio of the speed of the Earth over the speed of light. The Doppler effect contains a similar proportionality to v/c.</ref> ...19 KB (3,075 words) - 08:14, 3 December 2024
- ==Application to range-Doppler imaging== ...doppler axis. SAMV-0 offers superior resolution in terms of both range and doppler.<ref name=AbeidaZhang/>]] ...13 KB (1,888 words) - 16:39, 25 February 2025
- ...oms in question are moving relative to the propagation of the laser, the [[Doppler effect]] modifies the detuning: ...er detuning in this way to a specific red shifted value is the basis for [[Doppler cooling]]. ...13 KB (1,868 words) - 10:44, 28 February 2025
- ...transmitter]] and the [[Receiver (radio)|receiver]] oscillators; and the [[Doppler effect]] as the [[transmitter]] or the [[Receiver (radio)|receiver]] is mov ...Hence, '''carrier frequency offset''' always exists even if there is no [[Doppler effect]]. ...15 KB (2,283 words) - 04:23, 26 July 2024
- {{Short description|A method of sub-Doppler cooling used in ultracold atomic physics experiments on alkali metals}} '''Gray molasses''' is a method of [[Sub-Doppler cooling|sub-Doppler laser cooling]] of atoms. It employs principles from [[Sisyphus cooling]] i ...22 KB (3,192 words) - 17:28, 28 May 2024
- ...ositron emission tomography|PET]], and [[Magnetic resonance imaging|MRI]]. Doppler ultrasound is limited to large vessels. PET requires arterial blood samplin ...(DLS). Single-scattering theory becomes inadequate as multiple scattering effects take place in biological thick tissues. Therefore, each scattering event co ...11 KB (1,637 words) - 19:30, 29 September 2023
- ...le/10.1209/0295-5075/12/8/003 |language=en |issn=0295-5075}}</ref> While [[Doppler cooling]] allows atoms to be cooled to hundreds of microkelvin, PG cooling ...rature|recoil limit]]. While the limit of PG cooling is lower than that of Doppler cooling, the capture range of PG cooling is lower and thus an atomic gas mu ...25 KB (3,808 words) - 22:46, 28 January 2025
- ...ns of the refractive index of the sample, etc.) Light scattered with small Doppler shifts in its frequency beats on the detector (eventually the eye) giving r ...in the materials that compose it with power changes as well as many other effects increasing the complexity in the identification and isolation of these phen ...8 KB (1,179 words) - 17:34, 27 December 2023
- ...se small spatial structures cannot be resolved by the waves, only indirect effects (e.g. wavevector dependence) remain detectable. An example of spatial dispe ...rsion contributes relatively small perturbations to optics, providing weak effects such as [[optical activity]]. Spatial dispersion and temporal dispersion ma ...10 KB (1,573 words) - 23:51, 2 October 2024
- ...ref> Actual line shapes are determined principally by [[Doppler broadening|Doppler]], [[Spectral line#Broadening and shift|collision and proximity]] broadenin * [[Doppler broadening]]. This is caused by the fact that the velocity of atoms or mole ...25 KB (3,634 words) - 02:03, 29 January 2025
- ...st2=Palacios-Laloy |first2=Agustin |date=December 2020 |title=Second-order effects in parametric-resonance magnetometers based on atomic alignment |url=https: ...ine structure levels, and it is these levels that the laser light directly effects. Each level requires a certain amount of energy to reach from the atoms gro ...33 KB (5,264 words) - 17:49, 19 January 2025
- === Doppler tolerance of linear chirps === ...ic frequency law can be used, as it has been shown to be fully tolerant to Doppler shifts.<ref name = Thor>Thor R. C., "A large Time-Bandwidth Product Pulse C ...64 KB (10,218 words) - 10:04, 28 May 2024
- ...f drop size measurements are laser diffraction, optical imaging, and phase Doppler. All of these optical methods are non-intrusive. If all the drops had the s ...-E. Albrecht, M. Borys, N. Damaschke, C. Tropea, ''Laser Doppler and Phase Doppler Measurement Techniques'', 2003, {{ISBN|3-540-67838-7}}</ref> a flux-based m ...26 KB (3,951 words) - 10:23, 19 February 2025
- ...gled pairs of atoms,<ref name=":0" /> that acquire relative phase due to [[Doppler effect]]. *[[Coherent effects in semiconductor optics#Quantum beats involving excitons and exciton comple ...10 KB (1,599 words) - 04:55, 20 October 2022
- ...sp;cm/s which are measured by [[Acoustic Doppler current profiler|acoustic doppler current profilers]] (ADCPs). Time scales associated with convective plumes ...|last1=Send|first1=Uwe|last2=Marshall|first2=John|date=1995|title=Integral Effects of Deep Convection|journal=[[Journal of Physical Oceanography]]|language=EN ...26 KB (3,962 words) - 19:23, 5 January 2025