Source:FERMAT, Articles, 2016-Vol15-May_Jun-003
Abstract:The frequency domain hybrid Method of Moment (MoM) and Physical Optics (PO) usually requires a iteration between MoM and PO region. This is a reasonable choice for frequency domain because most of the computation cost is in factorizing the MoM matrix and while the cost of back substitution to the matrix equation is negligible. But it is not the case for the time domain version. In time domain method, the back substitution is the major bottle neck for computation time because it is done for each time step for marching-on-in-time or order step for marching-on-in-degree. So the iteration between MoM and PO region become costly because it requires to compute all the time or order steps for each iteration. In this paper, I presented a method that can avoid this iteration and thus speed up the computation speed for several times.
Index Terms:Method of Moments (MoM), time domain electric field integral equation (TD-EFIE), physical optics (PO).
View PDFTime Domain Method of Moment (MoM) and Physical Optics (PO) Hybrid Method with Reduced Iterations