ABSTRACT

An optimization method of pattern synthesis is proposed for peak sidelobe level (PSLL) suppression and null controlling via element rotation and phase optimization. The purpose of this method is to introduce the rotation angle of element into the anti-interference array design to further improve the radiation performance. The design objective is to suppress the PSLL while maximizing the main-beam gain with the constraint of null depth. To save the computational costs and avoid the re-mesh, the improved MoM is presented to solve the radiation problem of anti-interference array, which can accurately give the radiation field and precisely predict the null position. The sensitivity and MMA based solving procedures of the optimization problem are presented. Typical examples are provided to verify the effectiveness of the proposed method. The results show that, through collaboratively optimizing the rotation angles and excitation phases, the PSLL of anti-interference array with desired nulls is effectively suppressed.

摘要

提出了一种通过元件旋转和相位优化来抑制峰值旁瓣电平(PSLL)和零点控制的模式合成优化方法。这种方法的目的是在抗干扰阵列设计中引入元件的旋转角度，以进一步提高辐射性能。设计目标是抑制 PSLL，同时在零深度的约束下最大化主光束增益。为了节省计算成本和避免重新划分网格，提出了改进的MoM来解决抗干扰阵列的辐射问题，可以准确给出辐射场并精确预测零位。介绍了优化问题的灵敏度和基于 MMA 的求解程序。提供了典型的例子来验证所提出方法的有效性。