中国海洋大学学报（自然科学版）2026，Vol.56Issue(6)：101-113,13.DOI:10.16441/j.cnki.hdxb.20250187
基于VMD-TFA的航行状态下船载地波雷达展宽海杂波内目标检测方法
VMD-TFA Based Target Detection Method for Shipborne HFSWR Within Extened Sea Clutter Under the Navigation State of Platforms
摘要
Abstract
Under navigation state of shipborne platforms,high frequence surface wave radar systems experience severe sea clutter spreading in the echo spectrum,causing targets to be obscured within the sea clutter blind zone and significantly degrading detection performance.To address this challenge,this study proposes a novel shipborne ground wave radar target detection method for broadened sea clutter environments,based on Variational Mode Decomposition-Time Frequency Analysis(VMD-TFA).The proposed approach exploits two key discriminative features between broadened sea clutter and targets.Echo waveform characteristics-broadened sea clutter exhibits irregular,smooth waveforms,whereas target echoes demonstrate symmetry with distinct"glitch"artifacts.Time-frequency ridge properties-sea clutter shows abrupt energy amplitude variations and short-duration ridges,while target echoes maintain stable,long-term ridge continuity.Leveraging these differential characteristics,the method ef-fectively detects targets within broadened sea clutter.Validation through both simulations and measured shipborne ground wave radar data demonstrates the method's robust performance,achieving a detection rate of 90%in challenging sea clutter conditions.关键词
船载地波雷达/展宽海杂波/信号分解/时频分析/目标检测Key words
shipborne high frequency surface wave radar/broadened sea clutter/signal decomposition/time-frequency analysis/target detection分类
信息技术与安全科学引用本文复制引用
吴海睿,纪永刚,任继红,王浚,李发瑞..基于VMD-TFA的航行状态下船载地波雷达展宽海杂波内目标检测方法[J].中国海洋大学学报（自然科学版）,2026,56(6):101-113,13.基金项目
国家自然科学基金项目(62271507,62371479)资助Supported by the National Natural Science Foundation of China(62271507,62371479) （62271507,62371479）
