一种结合双向耦合简正波理论的匹配模目标被动定位方法
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NAT UNIV OF DEFENSE TECH
- Filing Date
- 2025-03-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing matching mode localization algorithms suffer from large errors in copy field calculations and reduced localization performance in shallow sea environments with drastic horizontal changes because they do not consider the effects of modal coupling and backscattering fields.
Combining bidirectional coupled normal mode theory, a multimodal admittance model is established. By introducing a spurious absolute hard boundary and complex sound velocity gradient on the seabed, the modal coefficients of the copied sound field are calculated, and the spatial position of the underwater target is estimated using a matched mode processor.
It improves the positioning accuracy in shallow sea waveguides with horizontal variations, and can accurately estimate the spatial location of underwater sound sources, making it suitable for complex marine environments.
Smart Images
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