基于量子微粒群的综合孔径圆环阵排列方法

摘要

Sparse antenna array design is of great importance in aperture synthesis radiometers. Due to the non-redundant baseline distribution and the simplicity of mechanical structure, the circular antenna array is considered as a promising array configuration of aperture synthesis radiometers. In this paper, a circular antenna array design method based on quantum particle swarm optimization （QPSO） is proposed to improve the UV coverage of the circular antenna array in aperture synthesis radiometers. By introducing quantum mechanics and constructing a novel measure function of UV coverage, this method outperforms the existing methods in terms of the computation complexity and global exploration efficiency, and has a better measurement for the uniformity of UV coverage. Numerical simulations validate the effectiveness of the proposed method.%稀疏天线阵列设计是综合孔径微波辐射计的一个重要研究内容。圆环阵因其可实现（u,v）平面基线零冗余、结构简单以及共形、波束旋转对称等特点而备受关注。针对均匀圆环阵UV覆盖不均匀的问题,提出基于量子微粒群优化（QPSO）的综合孔径圆环阵排列方法,以改善圆环阵的UV覆盖。该方法引入量子行为的搜索机制,并设计一种新的圆环阵优化目标函数;与现有方法相比,该方法在提高全局搜索效率的同时,大大降低计算复杂度,且能更好地度量圆环阵UV覆盖的均匀程度。数值仿真结果验证了本文方法的有效性。