Effect of environmental mismatch on range estimation using waveguide invariant: theoretical analysis, simulations and experimental results

Li, C.X.; Guo, M.F.; Pan, Xiang

doi:10.1049/iet-rsn:20070009

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…However, under the circumstances of varying bathymetry and sound speed, etc. [20], β is modeled as a distribution [21,22]. Then, the prior environmental information [23] or guided sources [24] is needed to calculate the value of β, which is not possible in real scenarios.…”

Section: Introductionmentioning

confidence: 99%

Striation-Based Beamforming with Two-Dimensional Filtering for Suppressing Tonal Interference

Li,

Wu,

Guo

et al. 2023

JMSE

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Based on the interference spectrogram in the element–frequency domain using the data measured by the horizontal linear array, the source range can be estimated through the striation-based beamforming (SBF) method and its variants. Estimation of the striation slope is the basis for these ranging methods. But in practical scenarios, the tonal interferences and other noise make it difficult to estimate the slope. In this paper, we proposed a two-dimensional low-pass filtering method after the two-dimensional discrete Fourier transform (2D-DFT) of the element–frequency domain spectrogram. The signals can be separated from the interference and noise using this filter. For the linear frequency-modulated signal without a known waveform, we also proposed an extraction and phase compensation method based on the time–frequency spectrogram, and the acoustic data obtained can be used for source ranging. The experimental results indicate that the methods proposed are feasible.

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Section: Introductionmentioning

confidence: 99%

Striation-Based Beamforming with Two-Dimensional Filtering for Suppressing Tonal Interference

Li,

Wu,

Guo

et al. 2023

JMSE

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show abstract

“…With the development of research, the problems above have been realised. Some scholars [10–12] discussed the influence of the complex acoustic channel on the signals. Almeida et al .…”

Section: Introductionmentioning

confidence: 99%

Navigation error prediction for UWAN based on AUV

Sun

2020

IET Radar, Sonar & Navigation

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“…The behaviour of acoustic waves in a water body is determined by its sound‐speed profile (SSP). Applications like submarine warfare demand source localisation, which relies on accurate prior information of SSP [1, 2]. The channel capacity for underwater acoustic communications is also dependent on prior SSP information [3].…”

Section: Introductionmentioning

confidence: 99%

Estimation of range‐dependent sound‐speed profile with dictionary learning method

Kuo

Kiang

2020

IET Radar, Sonar & Navigation

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Effect of environmental mismatch on range estimation using waveguide invariant: theoretical analysis, simulations and experimental results

Cited by 3 publications

References 12 publications

Striation-Based Beamforming with Two-Dimensional Filtering for Suppressing Tonal Interference

Striation-Based Beamforming with Two-Dimensional Filtering for Suppressing Tonal Interference

Navigation error prediction for UWAN based on AUV

Estimation of range‐dependent sound‐speed profile with dictionary learning method

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