Journal
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
Volume 149, Issue 3, Pages 1699-1711Publisher
ACOUSTICAL SOC AMER AMER INST PHYSICS
DOI: 10.1121/10.0003645
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Funding
- National Natural Science Foundation of China [11704396]
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A deep transfer learning method is proposed for the direction of arrival estimation using a single-vector sensor, involving CNN training with synthetic source data and adaptation to target domain with at-sea data. By feeding the CNN with acoustic pressure and particle velocity cross-spectra, reliable DOA estimates of a moving surface ship are achieved, outperforming conventional CNNs, especially in the presence of interfering sources.
A deep transfer learning (DTL) method is proposed for the direction of arrival (DOA) estimation using a single-vector sensor. The method involves training of a convolutional neural network (CNN) with synthetic data in source domain and then adapting the source domain to target domain with available at-sea data. The CNN is fed with the cross-spectrum of acoustical pressure and particle velocity during the training process to learn DOAs of a moving surface ship. For domain adaptation, first convolutional layers of the pre-trained CNN are copied to a target CNN, and the remaining layers of the target CNN are randomly initialized and trained on at-sea data. Numerical tests and real data results suggest that the DTL yields more reliable DOA estimates than a conventional CNN, especially with interfering sources.
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