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• W4387637895 startingPage "115998" @default.
• W4387637895 abstract "Noise interference of an autonomous underwater vehicle (AUV) is a critical factor affecting the performance of AUV-mounted sonar payloads, especially for passive acoustic systems. Adaptive noise cancellers (ANCs) are used to eliminate noise in many scenarios for signal enhancement. However, a conventional ANC uses a primary sensor to get the data and a secondary sensor to get correlated reference noise input, which adds complexity to the AUV-mounted sonar systems. In this paper, a modified ANC is proposed to improve the performance of an AUV-mounted passive inverted ultra-short baseline (piUSBL) positioning system receiver. Unlike the conventional ANC, the reference input of this ANC is not the noise obtained using a secondary sensor; instead, the transmitted source signal is used as the reference signal, independent of the noise characteristics. The performance of the ANC is thoroughly evaluated using the field navigation data collected from an AUV sea trial. Post-processing results indicate that the ANC can effectively improve the beamforming performance of the piUSBL array, suppressing the beamformed power of the AUV noise by up to 13.8 dB. To our knowledge, this work is the first ANC study for piUSBL, which is of great significance for the further development of piUSBL." @default.
• W4387637895 created "2023-10-15" @default.
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• W4387637895 date "2023-11-01" @default.
• W4387637895 modified "2023-10-15" @default.
• W4387637895 title "Adaptive noise cancelling for an AUV-mounted passive inverted USBL array" @default.
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• W4387637895 doi "https://doi.org/10.1016/j.oceaneng.2023.115998" @default.
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