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  • or a partial differential equation (PDE), a ''source'' or forcing function for the equation, and a set of ''boundary conditions.'' ...ear operator, many such problems may be solved via the so-called [[Green's function method]].
    384 bytes (60 words) - 10:45, 16 March 2020
  • ...e convolution of the source wavelet and the medium’s Green’s function. See [[Special:MyLanguage/Dictionary:convolutional_model|''convolutional mo or a partial differential equation (PDE), a ''source'' or forcing function for the equation, and a set of ''boundary conditions.''
    789 bytes (119 words) - 10:45, 16 March 2020
  • ...re mild, the thin-lens term can be dropped (Section D.3), and the velocity function used in the diffraction term can be varied laterally. In the frequency-wave ...ame), where the constant velocity is the rms value of the layered velocity function at the depth of the original diffractor as in Figure 8.0-9. Traveltimes ass
    210 KB (32,495 words) - 16:24, 5 September 2014
  • ...e convolution of the source wavelet and the medium’s Green’s function. See [[Special:MyLanguage/Dictionary:convolutional_model|''convolutional mo or a partial differential equation (PDE), a ''source'' or forcing function for the equation, and a set of ''boundary conditions.''
    743 bytes (113 words) - 10:45, 16 March 2020
  • ...he error activates the guidance system, which consists of power amplifiers forcing the rudder in the direction that decreases the error. Because it takes time A trivial all-pass system is one whose impulse response is the Dirac delta function, or unit spike; such a system passes input to output with no change at all.
    10 KB (1,624 words) - 17:01, 30 April 2021
  • ...esentative of the physical earth. Any observable discrepancies are used as forcing functions in an iterative improvement method. Sometimes simple adjustments ...ed. In summary, iterative improvement is a means of adjusting the velocity function until, one hopes, an excellent subsurface image of the geology is obtained.
    5 KB (613 words) - 15:13, 26 April 2021
  • ...esentative of the physical earth. Any observable discrepancies are used as forcing functions in an iterative improvement method. Sometimes simple adjustments ...ed. In summary, iterative improvement is a means of adjusting the velocity function until, one hopes, an excellent subsurface image of the geology is obtained.
    5 KB (639 words) - 15:12, 26 April 2021
  • ...esentative of the physical earth. Any observable discrepancies are used as forcing functions in an iterative improvement method. Sometimes simple adjustments ...ed. In summary, iterative improvement is a means of adjusting the velocity function until, one hopes, an excellent subsurface image of the geology is obtained.
    4 KB (629 words) - 16:07, 7 May 2021
  • ...he error activates the guidance system, which consists of power amplifiers forcing the rudder in the direction that decreases the error. Because it takes time A trivial all-pass system is one whose impulse response is the Dirac delta function, or unit spike; such a system passes input to output with no change at all.
    10 KB (1,583 words) - 16:34, 7 May 2021
  • ...he error activates the guidance system, which consists of power amplifiers forcing the rudder in the direction that decreases the error. Because it takes time A trivial all-pass system is one whose impulse response is the Dirac delta function, or unit spike; such a system passes input to output with no change at all.
    10 KB (1,576 words) - 17:01, 30 April 2021