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本文首先讨论了稀布阵子阵级自适应数字波束形成技术的特点,在稀布阵特性的理论分析基础上,设计了一种稀布天线阵模型.接着针对三种天线子陈划分:规则不重叠子阵、规则重叠子阵和不规则不重叠子阵,分析了产生栅瓣现象的原因,并且比较了它们的特性.最后根据稀布阵的特点,提出了两种子阵划分方法:子阵单元规则排列法和子阵单元数一定法.计算模拟表明,其具有良好的性能.
In this paper, we first discuss the characteristics of SBS sub-array adaptive digital beamforming technology, and design a thin antenna array model based on the theoretical analysis of SBS characteristics. Overlapping sub-arrays, regular overlapping sub-arrays and irregular non-overlapping sub-arrays, the reasons for the occurrence of grating lobes are analyzed and their characteristics are compared.Finally, two sub-arrays are proposed according to the characteristics of the thin arrays: The method of regular arrangement of cells and the number of sub-array elements are given. Computational simulation shows that it has good performance.