Abstract
This paper proposes a direction of arrival (DOA) estimation method for an acoustic source using linear sensor arrays on the basis of generalized regression neural network (GRNN). The real and imaginary parts of the received data of linear sensor arrays in the frequency domain are vectorized and spliced into a one-dimensional sequence as the input feature. The application of this method is studied in three scenarios on noiseless, noisy, and hybrid training sets. Simulations show that the GRNN algorithm has higher accuracy at high SNRs than the support vector machine (SVM), convolutional neural network (CNN) and multiple signal classification (MUSIC) methods, and only the GRNN method can estimate the DOA effectively at low SNRs. According to the different accuracy requirements in practical applications, this paper also provides the selection rules for an appropriate training set for the GRNN method. Therefore, the GRNN method can achieve effective the DOA estimation in different SNR environments of many scenarios.
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This work was supported in part by the National Natural Science Foundation of China under Grants No. 11974286, 61971353 and 11904274.
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Yao, Q., Wang, Y., Yang, Y. et al. DOA estimation using GRNN for acoustic sensor arrays. Multidim Syst Sign Process 34, 575–594 (2023). https://doi.org/10.1007/s11045-023-00877-9
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DOI: https://doi.org/10.1007/s11045-023-00877-9