Active control of target scattered sound fields in ocean environments using virtual sensing
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View abstract on PubMed
Summary
This summary is machine-generated.This study introduces a novel active scattering control method for underwater acoustic stealth in ocean environments. The technique enhances control performance despite challenging waveguide conditions, improving target stealth capabilities.
Area Of Science
- Acoustics
- Ocean Engineering
- Signal Processing
Background
- Low-frequency acoustic stealth is crucial for underwater targets.
- Ocean waveguides present challenges like multipath effects and non-uniform sound speed, degrading existing control methods.
Purpose Of The Study
- To propose an active scattering control method effective in ocean waveguide environments.
- To address limitations of current methods in complex underwater acoustics.
Main Methods
- An improved virtual sensing technique for multi-incidence scenarios to predict free-field far-field.
- Integration of ocean environmental parameters to estimate far-field pressure distribution.
- Design of secondary source array weight vector and exploration of control strategies for unknown environmental parameters.
Main Results
- Finite element method simulations validated the method using a cylinder in various channels.
- Demonstrated feasibility and effectiveness of the proposed active control strategy.
- Successful active control of scattered sound fields in both isovelocity and depth-dependent channels.
Conclusions
- The proposed active scattering control method is effective in challenging ocean waveguide environments.
- The virtual sensing technique and integration of environmental parameters enhance underwater acoustic stealth.
- The method offers a viable solution for low-frequency acoustic stealth of underwater targets.
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