程钰间

个人信息Personal Information

教授 博士生导师

性别:男

毕业院校:东南大学

学历:博士研究生毕业

学位:工学博士学位

在职信息:在岗

所在单位:电子科学与工程学院

办公地点:四号科研楼A区

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团队有关一种基于凸优化的差波束优化综合模型研究成果在IEEE TAP期刊上发表

发布时间:2022-12-30   点击次数:

论文名称为“Synthesis of difference patterns for 3-D conformal beam-scanning arrays with asymmetric radiation aperture”。针对具备非对称单元位置及极化指向的三维共形阵列生成大斜率对称差波束难题,该文提出了一种基于凸优化的差波束优化综合模型。该模型首先利用多维向量聚类方法生成非对称三维共形阵列的初始差波束方向图进而确定差波束主瓣及副瓣约束条件。进一步,通过引入辅助相位函数将差波束主瓣对称性的非凸约束条件转换为凸约束,最后通过迭代凸优化的方式得到最优差波束方向图。优化过程中提取了真实仿真单元的矢量电场,并给出了具有非对称辐射口径的半球共形阵列及圆锥共形阵列作为设计示例。数值及全波仿真结果均表明所提出的方法可在半球共形阵列及圆锥共形阵列非对称辐射口径下生成具备-20dB副瓣、-42dB以上零点深度的高度对称差波束。工作的主要完成人为林宏声程钰间、樊勇。

论文链接:https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9751422

Abstract— Due to the asymmetry of the elements’ position dis2 tribution and polarization direction, it is a challenge to synthesize 3 difference patterns with large slope and symmetric main-lobe on 4 3-D conformal beam-scanning arrays with asymmetric radiation 5 aperture. In this article, an approach to synthesize the optimal 6 difference patterns for 3-D conformal arrays with asymmetric 7 radiation aperture is proposed. To determine the limitation 8 region of the main-lobe and sidelobe for a 3-D conformal 9 array, an initial difference pattern is generated by the joint 10 multidimensional vector clustering method. Then, an auxiliary 11 phase function is introduced to convert the nonconvex constraint 12 of the symmetry of the difference beam into a convex one. 13 Finally, an iterative convex optimization is applied to obtain 14 the optimal difference pattern. The optimization progress is 15 finished by extracting the vector field patterns of a simulated 16 antenna element. Two design examples employing hemispherical 17 conformal array (HCA) and conical conformal array (CCA) with 18 asymmetric radiation aperture are implemented to demonstrate 19 the effectiveness of the proposed method. Difference patterns with 20 −20 dB sidelobe level (SLL) and large slope are obtained in both 21 numerical and simulated results of the two design examples.

Index Terms— Asymmetric aperture, clustering, conformal 23 arrays, difference beam pattern, iterative convex optimization, 24 low sidelobe level (SLL).