安装在曲面平台上的共形阵快速计算方法研究

A Fast Calculation Method for Conformal Array Mounted on Curved-surface Platform

对于安装在曲面平台上的共形阵列,提出了一个有效的远场方向图计算方法.从远场叠加原理开始,用一个包含单元互耦影响的有源单元方向图技术来描述阵列辐射特性.利用有源单元方向图技术结合坐标转换理论来研究曲面共形阵,将所有的单元划分为不同的部分,将一个大的阵列计算问题分成各类简单的子阵问题的叠加,极大地降低了计算负担.数值结果验证了提出的方法的正确性.

An effective approach for calculating the far field pattern of conformal arrays mounted on curved-surface platform is proposed.Starting from the superposition principle for arrays,an active element pattern technique including element mutual coupling effects is used to illuminate the radiation characteristics of arrays.And then the proposed theory of an active element pattern technique combining with the element polarized pattern transformation is applied to analyze a curved-surface conformal array.By dividing all elements into different parts,a large array problem can be divided into a superposition of various simplified sub-array problems and greatly reduces the computation burden.Numerical results show that the proposed method is valid.