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Article

2 Citations

2,652 Views

17 Pages

Array-Based Underwater Acoustic Target Classification with Spectrum Reconstruction Based on Joint Sparsity and Frequency Shift Invariant Feature

Chenxiang Lu,
Xiangyang Zeng,
Qiang Wang,
Lu Wang and
Anqi Jin

J. Mar. Sci. Eng.2023, 11(6), 1101;https://doi.org/10.3390/jmse11061101

23 May 2023

The target spectrum, which is commonly used in feature extraction for underwater acoustic target classification, can be improperly recovered via conventional beamformer (CBF) owing to its frequency-variant spatial response and lead to degraded classi...

(This article belongs to the Section Ocean Engineering)

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Article

24 Citations

5,124 Views

20 Pages

Window-Based Constant Beamwidth Beamformer

Tao Long,
Israel Cohen,
Baruch Berdugo,
Yan Yang and
Jingdong Chen

Sensors2019, 19(9), 2091;https://doi.org/10.3390/s19092091

6 May 2019

Beamformers have been widely used to enhance signals from a desired direction and suppress noise and interfering signals from other directions. Constant beamwidth beamformers enable a fixed beamwidth over a wide range of frequencies. Most of the exis...

(This article belongs to the Special Issue Speech, Acoustics, Audio Signal Processing and Applications in Sensors)

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