Results 61 to 70 of about 1,282 (131)

Quantifying and Reducing the DOA Estimation Error Resulting from Antenna Pattern Deviation for Direction-Finding HF Radar

Remote Sensing, 2017
High-frequency (HF) radars are routinely used for remotely sensing ocean surface currents. However, the performance of the most widely used direction-finding HF radar is degraded due to the effect of the inevitable deviations of actual antenna pattern on
Yeping Lai, Hao Zhou, Yuming Zeng, Biyang Wen   +3 more
doaj   +1 more source

Research on 2-D Direction of Arrival (DOA) Estimation for an L-Shaped Array

Remote Sensing
Lately, there has been a significant increase in interest in coprime array configurations, as they offer the advantage of generating more extensive array apertures and enhanced degrees of freedom when contrasted with standard linear arrays. This document introduces an innovative two-dimensional direction-of-arrival (2-D DOA) estimation technique ...
Kun Ye, Lang Zhou, Shaohua Hong, Xuebo Zhang 0002, Haixin Sun   +4 more
openaire   +2 more sources

Near-Field Monopulse DoA Estimation for Angle-Sensitive Proximity WiFi Readers

IEEE Access, 2019
We study the effect of close-proximity in the estimation of the Direction-of-Arrival (DoA) using a monopulse antenna array system, with application to angle-sensitive proximity WiFi readers.
Jose Antonio Lopez-Pastor, Antonio Gomez-Alcaraz, David Canete-Rebenaque, Alejandro Santos Martinez-Sala, Jose Luis Gomez-Tornero   +4 more
doaj   +1 more source

Effects of reference sound speed on underwater acoustic direction-of-arrival estimation with horizontal plane array [PDF]

JASA Express Letters
Direction-of-arrival (DOA) estimation of an underwater acoustic target is usually dependent on the selection of reference sound speed. For a horizontal line array, severe error of DOA estimation is induced when reference sound speed diverges from phase ...
Feitong Chen, Lianghao Guo, Yuhan Liu, Jianjun Liu, Weiyu Zhang, Jiapeng Song, Ge Dong   +6 more
doaj   +1 more source

Two-Dimensional Angle Estimation of Two-Parallel Nested Arrays Based on Sparse Bayesian Estimation

Sensors, 2018
To increase the number of estimable signal sources, two-parallel nested arrays are proposed, which consist of two subarrays with sensors, and can estimate the two-dimensional (2-D) direction of arrival (DOA) of signal sources.
Lu Chen, Daping Bi, Jifei Pan
doaj   +1 more source

High-Resolution and Robust One-Bit Direct-of-Arrival Estimation via Reweighted Atomic Norm Estimation

Sensors
In recent years, one-bit quantization has attracted widespread attention in the field of direction-of-arrival (DOA) estimation as a low-cost and low-power solution.
Rui Li, Jianchao Yang, Zheng Dai, Xingyu Lu, Ke Tan, Weimin Su   +5 more
doaj   +1 more source

Energy Efficient Low-Complexity RIS-Aided 3-D DoA Estimation and Target Tracking Algorithm via Matrix Completion

IEEE Access
In this paper, we propose an algorithm for fast direction-of-arrival (DoA) tracking in reconfigurable intelligent surface aided systems. We reduce the total power consumption by reducing the number of radio-frequency chains in the access point, which ...
Aral Ertug Zorkun, Miguel A. Salas-Natera, Ramon Martinez Rodriguez-Osorio, Symeon Chatzinotas   +3 more
doaj   +1 more source

DOA Estimation Based on Real-Valued Cross Correlation Matrix of Coprime Arrays

Sensors, 2017
A fast direction of arrival (DOA) estimation method using a real-valued cross-correlation matrix (CCM) of coprime subarrays is proposed. Firstly, real-valued CCM with extended aperture is constructed to obtain the signal subspaces corresponding to the ...
Jianfeng Li, Feng Wang, Defu Jiang
doaj   +1 more source

Direction of Arrival (DOA) Estimation in an Array of Antennas using Derivative-Free Methods

International Journal of Computer Applications, 2015
In this paper, direction of arrival estimation has been addressed using derivative free methods and their hybrid procedure in antenna array signal processing. The problem has been formulated in the root mean square error sense by considering the single snapshot.
Junaid Ali Khan, Shahzada Alamgir, Raees M.Asif   +2 more
openaire   +1 more source

Experimental validation of spatial spectrum suppression algorithms for interference sources

Dianzi Jishu Yingyong
In the actual direction finding system, when the weak signal and the strong interference are spatially close, the spatial spectrum direction finding system can only estimate the direction of arrival (DOA) for the strong interference, and the performance ...
Sun Jiabao, Shi Wei, Wang Shenyun
doaj   +1 more source