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2025-02-17
A Review of DOA Estimation Technology Based on Programmable Metasurfaces
By
Progress In Electromagnetics Research M, Vol. 131, 81-93, 2025
Abstract
High-precision Direction of Arrival (DOA) estimation requires the use of a large-scale antenna array to achieve accurate results. However, the increasing number of antennas brings substantial challenges that hinder the practical implementation of DOA estimation in real-world engineering applications. The complexity and cost associated with deploying extensive antenna systems can be prohibitive. In contrast, digital metasurfaces offer a promising solution by dynamically manipulating electromagnetic waves. These advanced surfaces enable precise control over wavefronts while utilizing significantly fewer elements, leading to a more compact and cost-effective approach without sacrificing the high-resolution capabilities necessary for effective DOA estimation. This innovative technology not only simplifies the design but also enhances performance. To provide insights for future advancements in this field, this paper reviews the current research status of various DOA estimation techniques that integrate metasurfaces with conventional wave-direction estimation systems, highlighting their potential and applications in improving DOA estimation accuracy.
Citation
Zhicheng Pei, Tong An, Peixuan Zhu, and Huan Lu, "A Review of DOA Estimation Technology Based on Programmable Metasurfaces," Progress In Electromagnetics Research M, Vol. 131, 81-93, 2025.
doi:10.2528/PIERM24120203
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