摘要
高频地波雷达作为一种新兴的海洋监控探测技术,对海事的监控与检测有着重要的军民运用意义,被世界各国广泛应用于海面工程领域。由于电离层杂波分布的时变特性、扩展特性和非平稳特性,其在海洋杂波干扰中占主导地位,是目前制约高频海态监测雷达探测性能的主要因素之一,进一步实现海况探测、提高探测精度的关键就在于对电离层杂波的抑制。从特征值分解、自适应旁瓣对消、空时自适应和极化滤波这几个方向对电离层杂波抑制技术进行了分析和总结,为后续对电离层杂波的抑制研究提供参考。
As a new ocean monitoring and detection technology,high-frequency ground wave radar has im⁃portant military and civilian significance for maritime monitoring and detection,and is widely used in the field of sea surface engineering by countries all over the world.Due to the time-varying,spreading and non-stationary characteristics of the ionospheric clutter distribution,it plays a leading role in the ocean clutter interference and is one of the main factors restricting the detection performance of the high-frequency sea state monitoring radar.In order to further realize the sea state detection and improve the detection accuracy,the key is to suppress the iono⁃spheric clutter.The ionospheric clutter suppression techniques are analyzed and summarized from the aspects of ei⁃genvalue decomposition,adaptive sidelobe cancellation,space-time adaptive and polarization filtering,which pro⁃vide a reference for the subsequent research on ionospheric clutter suppression.
作者
刘强
尚尚
石依山
乔铁柱
Liu Qiang;Shang Shang;Shi Yishan;Qiao Tiezhu(Ocean college,Jiangsu University of Science and Technology,Zhenjiang 212100,Jiangsu,China)
出处
《航天电子对抗》
2022年第6期51-55,59,共6页
Aerospace Electronic Warfare
基金
国家自然科学基金项目(61801196)
国防基础科研计划稳定支持专题项目(JCKYS2020604SSJS010)
江苏省研究生科研与实践创新计划资助项目(SJCX22_1889)。
关键词
高频地波雷达
电离层杂波
杂波抑制
抑制措施
HF ground wave radar
ionospheric clutter
clutter suppression
suppression measures
