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Open AccessArticle

Compressed Sensing-Based DOA Estimation with Antenna Phase Errors

by 1, 1 and 2,*
1
School of Information Science and Engineering, Southeast University, Nanjing 211189, China
2
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(3), 294; https://doi.org/10.3390/electronics8030294
Received: 6 February 2019 / Revised: 25 February 2019 / Accepted: 28 February 2019 / Published: 5 March 2019
(This article belongs to the Special Issue Recent Advances in Array Antenna and Array Signal Processing)
In array signal processing, the direction of arrivals (DOAs) of the received signals are estimated by measuring the relative phases among antennas; hence, the estimation performance is reduced by the inconsistency among antennas. In this paper, the DOA estimation problem of the uniform linear array (ULA) is investigated in the scenario with phase errors among the antennas, and a diagonal matrix composed of phase errors is used to formulate the system model. Then, by using the compressed sensing (CS) theory, we convert the DOA estimation problem into a sparse reconstruction problem. A novel reconstruction method is proposed to estimate both the DOA and the unknown phase errors, iteratively. The phase errors are calculated by a gradient descent method with the theoretical expressions. Simulation results show that the proposed method is cost-efficient and outperforms state-of-the-art methods regarding the DOA estimation with unknown phase errors. View Full-Text
Keywords: compressed sensing; DOA estimation; phase errors; SOMP compressed sensing; DOA estimation; phase errors; SOMP
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MDPI and ACS Style

Liu, L.; Zhang, X.; Chen, P. Compressed Sensing-Based DOA Estimation with Antenna Phase Errors. Electronics 2019, 8, 294. https://doi.org/10.3390/electronics8030294

AMA Style

Liu L, Zhang X, Chen P. Compressed Sensing-Based DOA Estimation with Antenna Phase Errors. Electronics. 2019; 8(3):294. https://doi.org/10.3390/electronics8030294

Chicago/Turabian Style

Liu, Linxi; Zhang, Xuan; Chen, Peng. 2019. "Compressed Sensing-Based DOA Estimation with Antenna Phase Errors" Electronics 8, no. 3: 294. https://doi.org/10.3390/electronics8030294

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