移动三平行互质阵列改进设计方法
Improved design method of moving three-parallel coprime array
李铭時 1杨佳敏 1冀贞海 1魏阳杰 1叶子杰1
作者信息
- 1. 南京电子设备研究所,江苏 南京 210000
- 折叠
摘要
针对移动三平行互质阵列在虚拟阵列扩展中会产生孔洞的问题,提出了一种移动三平行互质阵列的改进设计方法,通过分析虚拟阵列孔洞位置及优化阵元摆放形式,使得阵列静止状态下所构造虚拟阵列的连续孔洞数不超过2个,同时尽可能减少构造虚拟阵列中的冗余,并且利用移动阵列的思想填补虚拟阵列中的孔洞,获得虚拟阵元全连续且自由度最大化的虚拟阵列,使得阵列自由度得到极大程度的提升.仿真实验结果表明了所提阵列设计方法的有效性,可在相同物理阵元的条件下获得自由度更高的虚拟阵列,具有较高的测向精度.
Abstract
Aiming at the problem of holes in virtual array expansion caused by moving three-parallel coprime array,an improved design of moving three-parallel coprime array is proposed.By analyzing the hole positions of virtual array and optimizing the array element placement,the number of continuous holes in virtual array con-structed in static state is less than two,and the redundancy in constructing virtual array is reduced as much as pos-sible.The idea of moving array is used to fill the holes in the virtual array,and the virtual array with full continu-ity and maximum freedom is obtained,and the freedom of the array is greatly improved.The simulation results show the effectiveness of the proposed array design method,and can obtain a virtual array with higher degrees of freedom and higher direction finding accuracy under the same physical elements.
关键词
互质阵列/阵列设计/自由度扩展/DOA估计Key words
coprime array/array design/degree of freedom extension/DOA estimation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据