随着预警探测需求的提升,大单元间距阵列的应用得到了快速发展,阵列栅瓣的有效抑制是大单元间距有限扫描阵列设计中的一项重要内容。文中首先介绍了非周期阵列抑制栅瓣的原理;然后,对子阵旋转和子阵错位两种非周期排布栅瓣抑制形式进行了仿真对比,从栅瓣电平、近区副瓣电平、量化瓣、阵列重构、极化形式五个维度分析了子阵旋转和子阵错位的性能优势,对大单元间距阵列的设计具有一定的工程指导意义。

With the increasing demand for early warning detection, the application of large unit spacing array was developed rapidly. Effective suppression of array grating lobe is an important part in the design of finite scan array with large unit spacing. The principle of grating lobe suppression in aperiodic array is introduced firstly, then two kinds method of grating lobe suppression are compared, which are subarray rotation and subarray displace. The advantages are analyzed through different dimensions, such as grating lobe level, near sidelobe level, quantified lobe, array reconstruction, polarization. This work has certain instructional significance to the design of array with large unit spacing.

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