Optimal Synthesis of Reconfigurable Planar Arrays With Simplified Architectures for Monopulse Radar Applications
Optimal Synthesis of Reconfigurable Planar Arrays With Simplified Architectures for Monopulse Radar Applications
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DOI：
10.1109/tap.2014.2386359
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发表时间：
2015-03
影响因子：
5.7
通讯作者：
P. Rocca;A. Morabito
中科院分区：
文献类型：
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作者：
P. Rocca;A. Morabito
提出了一种新的固定几何可重构平面阵和差方向图功率综合方法。所提出的设计技术允许最大限度地提高辐射性能（场斜率，幅度，甚至方向性）的两个波束图案在指定的方向受到完全任意的掩模旁瓣边界。无论元素的处置和阵列的边界，整个问题是通过一个凸（二次）规划过程来解决。此外，如果采用中心对称天线布局，则合成被简化为甚至更强大的线性规划例程，其保留由二次规划代码保证的解的唯一性和最优性，同时显著降低其计算权重（并且因此使得能够设计大得多的平面阵列）。所提出的方法还考虑到需要降低波束形成网络（BFN）的复杂性，这是通过共享两个辐射模态之间的部分激励幅度来实现的。一组数值例子的报告和讨论所提出的方法的通用性和有效性。
A new approach to the power synthesis of fixed-geometry reconfigurable planar arrays radiating sum and difference patterns is presented. The proposed design technique allows to maximize the radiation performance (field slope, amplitude, or even directivity) of both beam patterns over assigned directions subject to completely arbitrary masks for sidelobe bounds. Whatever the elements disposal and the array boundary, the overall problem is solved through a convex (quadratic) programming procedure. Moreover, if centrosymmetric antenna layouts are adopted, the synthesis is reduced to an even more powerful linear programming routine which preserves the solution uniqueness and optimality guaranteed by quadratic programming codes while dramatically decreasing their computational weight (and hence enabling the design of much larger planar arrays). The proposed approach also takes into account the need of reducing the complexity of the beam forming network (BFN), which is fulfilled by sharing part of the excitation amplitudes between the two radiation modalities. A set of numerical examples is reported and discussed to show the versatility and effectiveness of the proposed approach.