数字海洋与水下攻防2026，Vol.9Issue(1)：41-48,8.DOI:10.19838/j.issn.2096-5753.2026.01.003
非平稳异质噪声水下无人平台目标稳健探测
Robust Target Detection for Unmanned Underwater Platforms in Non-Stationary Heteroscedastic Noise Environment
摘要
Abstract
Employing unmanned underwater vehicle swarms equipped with active sonar to detect underwater targets in key maritime areas has become the preferred approach for locating"quiet"targets.However,ocean ambient noise often exhibits typical non-stationary,heteroscedastic,and impulsive characteristics,which degrade the performance of traditional parameter estimation methods based on Gaussian noise assumptions.To address this issue,this paper proposes a robust time-delay estimation method for target echoes based on weighted iterative sparse reconstruction with an Lq-norm constraint.By employing an Lq-norm loss function(0<q≤1)in place of the conventional L2-norm and integrating it with a weighted iterative matrix,the proposed technique effectively suppresses interference from non-stationary heterogeneous noise and multipath underwater acoustic channels,thereby enabling more accurate retrieval of time-delay parameters.An efficient solution is achieved via the alternating direction method of multipliers(ADMM),ensuring estimation accuracy while meeting the requirements of low-complexity algorithm for unmanned platforms.Simulation results and sea-trial data demonstrate that the proposed method can accurately extract target echo time-delay information in realistic underwater acoustic environments characterized by multipath propagation and non-stationary noise,offering a reliable and interference-resistant approach for detecting weak underwater targets in complex underwater acoustic environment.关键词
水下无人集群/目标探测/非平稳异质噪声/稀疏重构/Lq 范数/交替方向乘子法Key words
unmanned underwater swarms/target detection/non-stationary heteroscedastic noise/sparse reconstruction/Lq-norm/alternating direction method of multipliers(ADMM)分类
通用工业技术引用本文复制引用
苍思远,杨超然,张凯,刘志娜,杨华勇..非平稳异质噪声水下无人平台目标稳健探测[J].数字海洋与水下攻防,2026,9(1):41-48,8.基金项目
国家自然科学基金项目"水下无人集群探测中的时变水声信道理论及多声源互扰抑制方法"(62301244). （62301244）
