便携式卫星终端全空域共形数字阵列设计

针对便携式卫星终端要求的全空域多目标跟踪能力，基于终端外形设计了一种圆台结构的共形阵列。该阵列由顶面的平面阵列和侧面16条棱面围成的台体构成，顶部平面阵列产生的波束覆盖上半空间的大仰角区域，侧面的16条棱面则负责小仰角区域的波束覆盖。与球面天线相比，圆台阵列在工程实现和波束增益方面具有一定优势。分析了圆台阵列在全空域的增益性能，并考虑到实际应用中的遮挡效应，对空域进行了划分，不同的空域使用圆台不同方位的阵元进行数字波束形成。理论分析和仿真结果表明，圆台共形阵列全空域增益波动较小，性能良好。

Design of digital array in full airspace for potable satellite terminal

Aiming at the multi‐target tracking performance in full airspace required by potable satellite terminal ,a conformal array shaped as the circular stage body is designed on the outfit of the terminal .This array consists of planar array on the top and the stage body formed by 16 edged planes .The beam produced from the planar array on the top covers the high elevation area and the 16 edged planes cover the low elevation area .Compared with the spherical antenna , the circular stage body has certain advantages in engineer application and beam gain . The performance of beam gain in full airspace of the circular stage array is analyzed ,with consideration of the covering effect in practice .It divides the airspace and different airspace produces the beam forming by the elements from different directions of the circular stage body .The theoretical analysis and simulation result proves the full airspace gain of the circular stage body is comparatively stable with good performance .