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正演计算
相关语句
  forward computation
    Fast Algorithm for Forward Computation in Media with an Arbitrary Number of Planar Layers
    任意平面分层介质中正演计算的快速方法
短句来源
  “正演计算”译为未确定词的双语例句
    Fast,accurate forward calculating algorithm is helpful to improve the inverse efficiency.
    快速、高精度的正演计算方法有利于反演效率的改善。
短句来源
    The forward efficiency of numerical mode matching(NMM)methed, which was efficient traditionally, is not hight for the case of arbitrary planar layer-media.
    对于任意平面分层介质情形,传统高效的数值模式匹配法的正演计算效率并不很高。
短句来源
  相似匹配句对
    CALCULATION OF CAPACITANCE
    电容的计算
短句来源
    QUANTUM COMPUTING
    量子计算
短句来源
    Fast Algorithm for Forward Computation in Media with an Arbitrary Number of Planar Layers
    任意平面分层介质中正演计算的快速方法
短句来源
    Fast,accurate forward calculating algorithm is helpful to improve the inverse efficiency.
    快速、高精度的正演计算方法有利于反演效率的改善。
短句来源
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  forward computation
Block diagram implementation of the time-recursive algorithm is described, computational complexity with respect to increasing block size is compared with straight forward computation, and the proper time-recursive block size is suggested.
      
This approach avoids forward computation on the complex geometry of irregular grids.
      
A forward computation algorithm continuously computes dynamic slices as statements are executed.
      
As far as we know, no experimental data has been published for forward computation algorithm.
      
As mentioned above, the forward computation algorithms maintain the latest dynamic slice for each variable/location.
      
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For electromagnetic scattering and inverse scattering problem in inhomogeneous media, calculating Hankel transform rapidly, accurately is often required in order to perform efficient forward calculation. Here, fast Fourier transform is used to finish the calculation of Hankel transform in case of a dipole exciting in arbitrary planar layer media.

在非均匀介质电磁散射、逆散射等领域中,经常需要快速、精确地计算汉克尔变换来完成高效率的正演计算。针对任意平面分层的非均匀介质情形,以偶极子激励为例,应用快速傅里叶变换(FFT)来完成汉克尔变换计算。

In the electromagnetic scattering, inverse scattering about inhomogeneous media field,the efficiency of inverse computation is crectly effected by the speed of forward computation. Fast,accurate forward calculating algorithm is helpful to improve the inverse efficiency. The forward efficiency of numerical mode matching(NMM)methed, which was efficient traditionally, is not hight for the case of arbitrary planar layer-media. In this paper, a more efficient method is implemented by attaining firstly the representation...

In the electromagnetic scattering, inverse scattering about inhomogeneous media field,the efficiency of inverse computation is crectly effected by the speed of forward computation. Fast,accurate forward calculating algorithm is helpful to improve the inverse efficiency. The forward efficiency of numerical mode matching(NMM)methed, which was efficient traditionally, is not hight for the case of arbitrary planar layer-media. In this paper, a more efficient method is implemented by attaining firstly the representation of Hankel transform for the field component in each vertical layermedia and finishing the calculation of Hankel transform by fast Fourier transform. It avoids requiring numerical eigenmode, is suit to solve the problem in planar layer-media with a few vertical layers.The present method has also a imPOrtant value for application to solve electromagnetic scattering, inverse scattering about inhomogeneous media except planar layer-media.

在非均匀介质电磁散射、逆散射等领域中,正该计算速度直接影响着反演计算效率。快速、高精度的正演计算方法有利于反演效率的改善。对于任意平面分层介质情形,传统高效的数值模式匹配法的正演计算效率并不很高。本文通过首先推得每一纵向分层中场量的汉克尔变换表达,再用快速博里叶变换来完成汉克尔交换计算,从而得到更高效的计算方法。它避免了数值本征模式的求解,特别适于处理平面分层介质中纵向分层较多的情形。对于其它非均匀介质中的电磁散射、逆散射问题,本文方法也具有重要的应用价值。

Spectral method is one of the most popular methods for TEM directive calculation. One of the keys to this method is to solve the inner integration with Bessel function. In the past, the inner integration of directive calculation coincide-loop TEM response was to find zeros in the integrating zone and then sum up all the values computed in the area between two neighboring zeros by normal numerical integration. Although this method can get high accurate values, it has low efficiency. This paper presents a new...

Spectral method is one of the most popular methods for TEM directive calculation. One of the keys to this method is to solve the inner integration with Bessel function. In the past, the inner integration of directive calculation coincide-loop TEM response was to find zeros in the integrating zone and then sum up all the values computed in the area between two neighboring zeros by normal numerical integration. Although this method can get high accurate values, it has low efficiency. This paper presents a new method, which can gain both of acceptable accuracy and high efficiency.

频谱法是瞬变电磁法正演计算中常用的计算方法之一,其关键在于内层含贝塞尔函数的积分计算。对于重叠回线装置的瞬变电磁法正演的内层积分,以往采用在积分区间内寻找贝塞尔函数的零点分布,依次在相邻零点之间采用一般的数值积分法在求得各自的积分值后再叠加的方法进行计算。这种方法精度较高,但效率低。利用贝塞尔函数的大宗量渐近特性,提出一种新的计算方法。计算结果表明,该方法计算效率高、方法简单、精度可靠。

 
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