电子学报2017，Vol.45Issue(10)：2402-2408,7.DOI:10.3969/j.issn.0372-2112.2017.10.013
基于修正交错网格方案的RFG-FFT算法
The RFG-FFT Based on Modified Dislocated Grids Scheme
摘要
Abstract
In this paper a modified dislocated grids scheme combined with the FFT-based method is proposed to reduce the burden of the near correction matrix.The scheme first adopts two sets of dislocated Cartesian grids that are respectively applied to projections of the field points and the source points.Then parts of Green's function values are modified for further improving the accuracy of fitting.When the proposed scheme is applied to the Real coefficients Fitting Green's function Fast Fourier Transformation,the number of near correction elements is reduced.Compared with the traditional uniform grid scheme,the new scheme has lower total memory requirement and higher calculation speed.关键词
基于FFT的快速算法/实系数拟合格林函数FFT方法/交错网格/近场修正矩阵/格林函数Key words
the FFT-based method/RFG-FFT (the Real coefficients Fitting Green's function Fast Fourier Transformation method)/dislocated grids/near correction matrix/Green's function分类
信息技术与安全科学引用本文复制引用
谢家烨,庞丽莉,钱晓霞,卢松玉..基于修正交错网格方案的RFG-FFT算法[J].电子学报,2017,45(10):2402-2408,7.基金项目
江苏省高校自然科学研究基金(No.15KJB510014) （No.15KJB510014）
南京工程学院博士启动基金(No.YKJ201443,No.YKJ201444) （No.YKJ201443,No.YKJ201444）
东南大学毫米波国家重点实验室开放基金(No.K201718) （No.K201718）
