Generalized Nested Array: Optimization for Degrees of Freedom and Mutual Coupling

被引：105
|
作者：
Shi, Junpeng [1 ]
Hu, Guoping [1 ]
Zhang, Xiaofei [2 ]
Zhou, Hao [1 ]
机构：
[1] Air Force Engn Univ, Air & Missile Def Coll, Xian 710051, Shaanxi, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Dept Elect Engn, Nanjing 210016, Peoples R China
来源：
IEEE COMMUNICATIONS LETTERS | 2018年 / 22卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Direction of arrival estimation; generalized nested array; flexible co-prime factors; degrees of freedom; mutual coupling; DOA ESTIMATION; COPRIME ARRAY;
D O I：
10.1109/LCOMM.2018.2821672
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this letter, we propose a generalized nested array (GNA) with two flexible co-prime factors for enlarging the inter-element spacing of two concatenated uniform linear subarrays. It is shown that both the prototype nested array and generalized co-prime array can be interpreted as special cases. The closed-form expressions for the range of consecutive lags and the number of unique lags are derived for any given factors. After optimization, GNA has the same number of degrees of freedom as (super) nested array but with reduced mutual coupling. Numerical simulations prove the superiority of proposed configuration using compressed sensing algorithm.
引用
收藏
页码：1208 / 1211
页数：4
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