Direction-of-Arrival Estimation of Coherent Signals for Uniform Linear Antenna Arrays with Mutual Coupling in Unknown Nonuniform Noise

2021 ◽  
pp. 1-1
Author(s):  
Yunfei Fang ◽  
Shengqi Zhu ◽  
Yongchan Gao ◽  
Lan Lan ◽  
Cao Zeng ◽  
...  
Keyword(s):  
Antenna Arrays ◽  
Mutual Coupling ◽  
Direction Of Arrival ◽  
Direction Of Arrival Estimation ◽  
Linear Antenna ◽  
Coherent Signals ◽  
Linear Antenna Arrays

scholarly journals Ambiguity Resolution in Direction of Arrival Estimation with Linear Antenna Arrays Using Differential Geometry

2022 ◽  
Vol 70 (1) ◽  
pp. 581-599
Author(s):  
Alamgir Safi ◽  
Muhammad Asghar Khan ◽  
Fahad Algarni ◽  
Muhammad Adnan Aziz ◽  
M. Irfan Uddin ◽  
...  
Keyword(s):  
Differential Geometry ◽  
Antenna Arrays ◽  
Ambiguity Resolution ◽  
Direction Of Arrival ◽  
Direction Of Arrival Estimation ◽  
Linear Antenna ◽  
Linear Antenna Arrays

scholarly journals AR Model-Based Direction-of-Arrival Estimation of Coherent Signals in the Presence of Unknown Mutual Coupling

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Zhi-Chao Sha ◽  
Zhang-Meng Liu ◽  
Zhi-Tao Huang ◽  
Yi-Yu Zhou
Keyword(s):  
Mutual Coupling ◽  
Direction Of Arrival ◽  
Doa Estimation ◽  
Ar Model ◽  
Estimation Accuracy ◽  
Direction Of Arrival Estimation ◽  
Coherent Signals ◽  
Model Based ◽  
Mixing Matrix ◽  
Simulation Results

This paper addresses the problem of direction-of-arrival (DOA) estimation of coherent signals in the presence of unknown mutual coupling, and an autoregression (AR) model-based method is proposed. The effects of mutual coupling can be eliminated by the inherent mechanism of the proposed algorithm, so the DOAs can be accurately estimated without any calibration sources. After the mixing matrix is estimated by independent component analysis (ICA), several parameter equations are established upon the mixing matrix. Finally, all DOAs of coherent signals are estimated by solving these equations. Compared with traditional methods, the proposed method has higher angle resolution and estimation accuracy. Simulation results demonstrate the effectiveness of the algorithm.

Mutual coupling effects in linear antenna arrays

1970 ◽  
Vol 48 (6) ◽  
pp. 659-674 ◽  
Author(s):  
A. L. VanKoughnett
Keyword(s):  
Integral Equations ◽  
Antenna Arrays ◽  
Mutual Coupling ◽  
Linear Antenna ◽  
Coupling Effects ◽  
Mutual Impedance ◽  
Impedance Characteristics ◽  
Linear Antenna Arrays

The effects of mutual coupling among the array elements on the pattern and impedance characteristics of linear antenna arrays are examined. Based upon the assumption that the mutual impedance of two array elements depends only upon the separation of the elements, exact expressions are derived for the properties of infinite and semi-infinite arrays. Integral equations which describe finite arrays are derived and solved for special forms of the mutual impedance behavior and for large arrays.

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