基于同一子阵的平面稀疏阵列优化  

Array Optimization for Planar Thinned Arrays Based on One Sub-array Type

作　　者：李志刚[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2014年第3期28-31,共4页Radio Engineering

基　　金：国家部委基金资助项目

摘　　要：稀疏阵列的随机不规则分布对阵列的设计和制造成本有很大影响。为了降低制造成本,基于同一子阵设计了平面稀疏阵列,给出了子阵位置分布的优化设计方法。利用FFT算法得到一个经初步优化的稀疏阵列,通过置换阵元激励系数中0和1的位置来完成子阵的划分,再通过抖动子阵的位置搜索最优稀疏布局,并重复上述步骤进行多次试验。为了验证方法的有效性进行了计算机仿真,结果表明,可选择多次试验中性能次优的阵列作为最终的优化阵列以便于布线。The random and irregular configurations of thinned arrays have a strong impact on design and production costs. In this paper,in order to reduce the production costs,an approach for the optimization design of a thinned array is proposed based on one sub-array type. At first, an initial optimization thinned array is obtained by FFT algorithm. Next, the sub-array division is accomplished through permuting the position of 0 and 1 in the element excitation coefficients. Then,the best configuration of thinned array is searched by dithering the positions of the sub-arrays. At last,the above steps are repeated in many experiments. Moreover,a computational simu-lation is carried out to confirm the validity of the proposed method. The results show that the suboptimal array in several trials can be chosen as the final optimized array for convenience of interconnection.

关 键 词：稀疏阵列 半向阵列 FFT 置换 

分 类 号：TN957.2[电子电信—信号与信息处理]