弱化BCGS-FFT算法并矢Green函数层状介质电法测井采用弱化稳定型双共轭梯度快速Fourier变换(BCGS-FFF)算法精确计算了层状介质中的体积分方程.采用递推矩阵方法计算层状介质中的并矢Green函数,可以很方便地与体积分方程结合.将"屋顶"函数作为基函数和试探函数对体积分方程进行弱化离散,从而有效地避免了体积分方程的奇异...
层状介质中计算体积分方程的弱化BCGS-FFT算法 维普资讯 http://www.cqvip.com
Wei B J,Simsek E,Liu Q H.Improved diagonal tensor approximation (DTA) and hybrid DTA/BCGS-FFT method for accurate simulation of 3D inhomogeneous objects in layered media.Waves in Random and Complex Media. 2007Wei B J, Simsek E, Liu Q H. Improved Diagonal Tensor Approximation (DTA) and ...
It is solved by using the stabilized biconjugate gradient fast Fourier transform (BCGS-FFT) method. In the nonlinear inversion, the Born iterative method (BIM) and the conjugate gradient method are adopted to minimize the cost function. A synthetic model of GREATEM survey is used to validate ...
Two numerical examples are used to test the proposed method, and the results show that BCGS-FFT-PSO not only has strong adaptability for optical axes angles varying in wide ranges but also can retrieve composite model parameters of multiple homogeneous biaxial objects simultaneously even when the ...
1) BCGS-FFT BCGS-FFT 2) weak-form BCGS-FFT algorithm 弱化BCGS-FFT算法 3) BC BC 1. BasedBC& GPS For Data Process And Data Synchronization System; BC结合GPS实现数据精确采集与同步系统 2. This board is programmable to work inBC,RT,or BM mode,and the software of these three mode are...
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分部外推法电磁散射电场积分方程(EFIE)格林函数稳定双共轭快速傅里叶变换(BCGS-FFT)为了快速求解电磁散射问题中具有震荡性,奇异性,慢收敛性的索末菲积分,提出了一种利用分部外推算法加速索末菲尾部积分计算,并结合稳定双共轭快速傅里叶变换(stabilized biconjugate gradient fast Fourier transform,BCGS-FFT)算法求解...
in terms of the basis functions is used to obtain the discrete EFIE.; Thirdly, the BCGS-FFT method, which is a fast Krylov subspace iterative solver---the stabilized bi-conjugate gradient method (Bi-CGSTAB or BCGS for short)---combined with the fast Fourier transform (FFT), is developed...
2) BCDS-FFT BCGS-FFT法3) FFT FFT算法 1. FFT Algorithm for Calculating the SALS Patterns from Anisotropic Objects Immersed in an Isotropic Matrix; 材料介观有序结构小角光散射图案的FFT算法 2. Implementation of DSP on FFT in Virtual Instrument; 虚拟仪器中FFT算法的DSP实现 3. And the ...