文献类型：期刊文献

英文题名：2D DOA and Polarization Estimation Using Parallel Synthetic Coprime Array of Non-Collocated EMVSs

作者：Yang, Yunlong[1];Shan, Mengru[1];Jiang, Guojun[2]

机构：[1]Donghua Univ, Coll Informat Sci & Technol, Shanghai 201620, Peoples R China;[2]East China Univ Sci & Technol, Sch Informat Sci & Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：16

期号：16

外文期刊名：REMOTE SENSING

收录：;EI(收录号：20243516964203);WOS:【SCI-EXPANDED(收录号:WOS:001304732000001)】；

基金：This work was supported in part by the National Natural Science Foundation of China under Grant 62101190 and Grant 62301141, and in part by the Natural Science Foundation of Shanghai, China, under Grant 21ZR1416800.

语种：英文

外文关键词：coprime array; degrees of freedom; mutual coupling; direction-of-arrival estimation; polarization estimation

摘要：For target detection and recognition in a complicated electromagnetic environment, the two-dimensional direction-of-arrival and polarization estimation using a polarization-sensitive array has been receiving increased attention. To efficiently improve the performance of such multi-parameter estimation in practice, this paper proposes a parallel synthetic coprime array with reduced mutual coupling and hardware cost saving and then presents a dimension-reduction compressive sensing-based estimation method. For the proposed array, the polarization types, numbers, and positions of antennas in each subarray are jointly considered to effectively mitigate mutual coupling in the physical array domain and to both enhance degrees of freedom and extend the aperture in the difference coarray domain with the limited physical antennas. By exploring the array configuration, the parameter estimation can be formulated as a block-sparse signal reconstruction problem, and then the one-dimensional sparse reconstruction algorithm is only used once to achieve multi-parameter estimation with automatic pair-matching. The theoretical analysis and simulation results are provided to demonstrate the superior performance of the proposed array and method over the existing techniques.