基于知识先验与辅助样本的拖曳声呐空时混响抑制方法
By constructing an optimized model of a set of space-time steering vectors and sparse penalty weights, the problem of reverberation suppression in sonar systems under complex marine environments was solved, achieving accurate modeling and effective suppression of reverberation and improving the detection and estimation performance of sonar systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUNAN UNIV
- Filing Date
- 2026-04-07
- Publication Date
- 2026-07-17
AI Technical Summary
Existing sonar systems struggle to effectively suppress reverberation interference in complex marine environments, leading to decreased detection performance and parameter estimation accuracy. In particular, under non-stationary conditions and with limited training samples, existing methods cannot fully utilize the structured distribution characteristics of reverberation and auxiliary training information.
By constructing a set of space-time steering vectors, filtering vectors in the reverberation energy concentration region, and combining auxiliary samples for energy analysis and sparsity penalty weights, an optimization model is constructed to solve the reverberation sparsity coefficient, reconstructing and suppressing the reverberation component.
Accurate modeling and effective suppression of reverberation components were achieved in complex reverberation backgrounds, improving the discriminability and signal-to-noise ratio of target components in residual signals, and enhancing the reliability of sonar target detection and parameter estimation.
Smart Images
Figure CN121978666B_ABST