研究采用大单元间距非周期阵列的方法抑制和避免栅瓣，并在单元级非周期阵列形式的基础上研究适合于大型相控阵的子阵级非周期阵列形式，给出几种非周期阵列的形式及相应的波瓣图-study the method of aperiodic array using big space of elements to suppress and avoid the grating lobe, and study the forms of aperiodic array in the sub-array level which are suitable for large phased array on the base of the aperiodic array in the element level