中文摘要：

稀疏天线阵列设计是干涉式综合孔径微波辐射计的一个重要研究内容。文中提出了一种综合孔径辐射计二维稀疏天线阵列的排列方法,该方法适于构造阵元数任意大的二维稀疏阵。从理论上证明了该方法构造的二维稀疏阵在（u,v）平面采样覆盖的完备性,导出了由该方法构造的二维稀疏阵的冗余度理论上限,并证明其优于U、T型阵。理论分析和仿真结果均表明,与相同阵元数的U、T型阵比较,该方法构造的二维稀疏阵可获得更多的空间频率采样点数、更大的（u,v）平面覆盖面积,从而实现更高的空间分辨率。该方法对综合孔径辐射计的二维天线阵列设计具有参考价值。

英文摘要：

Sparse antenna array design is of great importance in Synthetic Aperture Interferometric Radiometer （SAIR）. An approach to topology design of two dimensional （2D） sparse arrays for SAIR, applicable to very large arrays, is proposed. The completeness of （u ,v） plane coverage provided by a 2D sparse array resulting from our approach is proved. The upper bound of redundancy with the array is derived, and proved superior to that of U or T array. The theoretical analysis and simulation results both show that a 2D sparse array constructed by our approach can obtain more spatial frequency samples and larger （ u, v） plane coverage,therefore achieve higher spatial resolution, compared to those of U or T array with the same element number. The approach can be used in 2D antenna array design in SAIR.