期刊
IEEE COMMUNICATIONS LETTERS
卷 24, 期 9, 页码 1953-1956出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2020.2997030
关键词
Estimation; Discrete Fourier transforms; Direction-of-arrival estimation; Two dimensional displays; Complexity theory; Taylor series; Covariance matrices; Two dimensional DOA; nested array motion; discrete Fourier transform
资金
- China NSF [61971217, 61631020, 61601167]
- Sonar Technology Key Laboratory
- Fundamental Research Funds for the Central Universities [NT2019013]
In this letter, two-dimensional (2D) direction of arrival (DOA) estimation using one-dimensional (1D) nested array motion is studied, and an improved Discrete Fourier transform (DFT) algorithm is proposed. Exploiting nested array to move vertically along its axis enables 2D DOA estimation with large-scale and hole-free difference co-array. DFT algorithm has lower complexity than multiple signal classifications(MUSIC) method, but traditional DFT algorithm still requires multiple extra searches to ensure estimation accuracy. We use DFT to obtain the initial angle estimations, and then compensate the estimation offsets via total least squares (TLS) constructed from Taylor expansion approximation. Compared with the traditional DFT search method, the proposed method has lower complexity and better performance. Multiple simulations are conducted to verify the effectiveness of our approach.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据