核外分块求解方法计算电大平台天线辐射特性  

Radiation Characteristics Calculation of Antenna Mounted on Electrically Large Platform Based on Block Out-of-Core Solving Method

作　　者：徐晓飞[1] 曹祥玉[1] 高军[1] 王盼盼[1] 郑秋容[1] 

机构地区：[1]空军工程大学电讯工程学院,西安710077

出　　处：《微波学报》2010年第6期28-31,共4页Journal of Microwaves

基　　金：国家自然科学基金(60671001);陕西省自然科学基础研究重点项目(2010JZ010);陕西省基础研究基金(SJ08-ZT06);空军工程大学电讯工程学院博士创新基金(200706)

摘　　要：载体平台对天线辐射特性的影响不容忽视,但由于计算机物理内存的限制,使得某些电大平台天线辐射问题无法计算。针对上述问题,采用了利用硬盘代替内存的核外求解方法;为加快求解速度,提出了一种核外分块高斯消元方法。将数据按块集中读写,从而极大地缩短了对硬盘操作的时间。分别计算了金属圆柱平台天线和车载平台天线的辐射方向图。结果表明,本方法可快速求解电大平台天线辐射问题,求解时间与核内方法只相差5.9%,而且不损失计算精度。The effect on the antenna radiation characteristics of the platform can not be ignored.But some radiation problems of antenna mounted on electrically large platform can not be calculated due to the limitation of the physical memory capacity.To solve the above problems,Out-of-Core solving method using hard disk instead of memory is used.In order to accelerate the solving speed,one block Gauss elimination method is presented.The matrices are read and written by blocks concentratively,so the time of the data reading/writing on the hard disk can be greatly reduced.The radiation patterns of a monopole mounted on a metal platform and a vehicular antenna model are calculated respectively.The results show that,the problems of antenna mounted on electrically large platform can be effectively solved by the method proposed in this paper,the solving time is only 5.9% more than the In-Core solving method＇s,and the calculation accuracy is not lost.

关 键 词：核外求解 平台天线 矩量法 

分 类 号：TN820[电子电信—信息与通信工程]