Velocity‐independent two‐dimensional direction‐of‐arrival estimation algorithm with three parallel linear arrays

Ning, Gengxin; Zhang, Shujia; Zhang, Jun

doi:10.1049/sil2.12081

Cited by 1 publication

(1 citation statement)

References 30 publications

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“…One-dimensional (1D) DOA estimation is the estimation of the elevation angle of targets. Two-dimensional (2D) DOA estimation, as an extension of 1D DOA estimation, enables the estimation of both the elevation and the azimuth angles [2]. Two-dimensional DOA is of greater importance for spatial localization and is, therefore, one of the main focuses of current research in the field.…”

Section: Introductionmentioning

confidence: 99%

Estimation of the Two-Dimensional Direction of Arrival for Low-Elevation and Non-Low-Elevation Targets Based on Dilated Convolutional Networks

Zhao

Liu

2023

Remote Sensing

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This paper addresses the problem of the two-dimensional direction-of-arrival (2D DOA) estimation of low-elevation or non-low-elevation targets using L-shaped uniform and sparse arrays by analyzing the signal models’ features and their mapping to 2D DOA. This paper proposes a 2D DOA estimation algorithm based on the dilated convolutional network model, which consists of two components: a dilated convolutional autoencoder and a dilated convolutional neural network. If there are targets at low elevation, the dilated convolutional autoencoder suppresses the multipath signal and outputs a new signal covariance matrix as the input of the dilated convolutional neural network to directly perform 2D DOA estimation in the absence of a low-elevation target. The algorithm employs 3D convolution to fully retain and extract features. The simulation experiments and the analysis of their results revealed that for both L-shaped uniform and L-shaped sparse arrays, the dilated convolutional autoencoder could effectively suppress the multipath signals without affecting the direct wave and non-low-elevation targets, whereas the dilated convolutional neural network could effectively achieve 2D DOA estimation with a matching rate and an effective ratio of pitch and azimuth angles close to 100% without the need for additional parameter matching. Under the condition of a low signal-to-noise ratio, the estimation accuracy of the proposed algorithm was significantly higher than that of the traditional DOA estimation.

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Section: Introductionmentioning

confidence: 99%