Parallel Out-of-Core MOM for analyzing radiation characteristics of antenna mounted on electrically large platform

The radiation characteristics calculation of antenna mounted on electrically large platform requires to consume a great deal of physical memory. The problems which can not be calculated due to the insufficient memory can be solved by Out-of-Core solving method, but it takes too longer time because the speed limit of the data reading/writing on the disk. To solve the above problem, parallel Out-of-Core computing method is proposed. In order to use the memory sufficiently and reduce the reading/writing time, block parallel Out-of-Core computing method is also presented. The radiation patterns of a monopole mounted on a metal column and a shipborne antenna model are calculated respectively. The solving time of In-Core solver and Out-of-Core solver with different numbers of blocks and using different numbers of processors are compared respectively. The results indicate that the method in this paper can efficiently solve the radiation problems of antenna mounted on electrically larger platform, the solving time is only 6.3 % more than the In-Core method´s, and the calculation precision is not lost.