2-D DOA estimation method based on coprime array MIMO radar

EURASIP Journal on Advances in Signal Processing

Aisuo Jin¹  Chuantang Ji¹  Fei Zhang¹  Zijing Zhang¹  Yi Wang² 

[1] School of Electronic and Information, Jiangsu University of Science and Technology, 212003, Zhenjiang, China;School of Intelligent Engineering, Zhengzhou University of Aeronautics, 450046, Zhengzhou, China;

关键词: Two-dimensional DOA;    MIMO;    Coprime array;    Sparse array;    Compressed sensing;   

DOI  :  10.1186/s13634-021-00783-x

来源: Springer

【 摘 要 】

Aiming at the problem that traditional direction of arrival (DOA) estimation methods cannot handle multiple sources with high accuracy while increasing the degrees of freedom (DOF), a new method for 2-D DOA estimation based on coprime array MIMO radar (SA-MIMO-CA) is proposed. First of all, in order to ensure the accuracy of multi-source estimation when the number of elements is finite, a new coprime array model based on MIMO (MIMO-CA) is proposed. This method is based on a new MIMO array-based co-prime array model (MIMO-CA), which improves the accuracy of multi-source estimation when the number of array elements is limited, and obtains a larger array aperture with a smaller number of array elements, and improves the estimation accuracy of 2-D DOA. Finally, the effectiveness and reliability of the proposed SM-MIMO-CA method in improving the DOF of array and DOA accuracy are verified by experiments.

【 授权许可】

CC BY