1-Bit Programmable Metasurface-Based 2-D Direction Finding

被引：4

作者：

Bai, Lin ^{[1
]}

Cao, Hongliang ^{[1
]}

Bai, Tong ^{[1
]}

He, Chong ^{[2
]}

机构：

[1] Beihang Univ, Sch Cyber Sci & Technol, Beijing 100191, Peoples R China

[2] Shanghai Jiao Tong Univ, Dept Elect Engn, Shanghai 200240, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2023年 / 22卷 / 09期

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

Direction finding; harmonic analysis; program mable metasurface; signal-to-noise ratio (SNR); time modulation; OF-ARRIVAL ESTIMATION; TIME-MODULATED ARRAY;

D O I：

10.1109/LAWP.2023.3279234

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel 2-D direction finding method is proposed, relying on a 1-bit programmable metasurface and the time modulation method. Both the azimuth and elevation angles of far-field signals are estimated simultaneously by analyzing the harmonic characteristic of received signals in the frequency domain. Low hardware cost and computational complexity can be achieved owing to the intrinsic nature of the single radio frequency (RF) chain in the proposed method. Extensive numerical results confirm that the direction finding attains a near-zero mean square error (MSE), when the signal-to-noise ratio (SNR) attains 10 dB. A Ka-band reflective programmable metasurface with 400 elements is fabricated and tested to verify its effectiveness partly.

引用

页码：2160 / 2164

页数：5