摘要
角反射器形成的强假目标干扰给反舰导弹雷达导引头目标识别带来了严峻的挑战。为提高反舰导弹雷达导引头抗冲淡式角反射器干扰能力,提出一种基于极化与高分辨距离像(high resolution range profile,HRRP)多特征融合的角反射器鉴别方法。结合3种场景下的实验数据,首先从海杂波中提取雷达导引头目标回波信号;其次,分析了角反和舰船回波的峰值个数、径向尺寸等5个距离像特征,以及极化相关系数均值等3个极化特征。实验数据处理结果表明,舰船与单个角反特征差异明显,与阵列角反特征差异减小;然后利用支持向量机(support vector machine,SVM)方法,基于实验数据设计5组测试,分别检验了单特征和多特征融合的鉴别性能。测试结果表明,单特征鉴别方法性能不稳定,而所提出的三特征融合鉴别方法更具稳健性,在5组测试中鉴别准确率均达到92.86%以上。
The strong false target interference formed by the corner reflector poses a serious challenge to the target identification of the anti-ship missile radar seeker.In order to improve the radar seeker’s ability of anti diluted corner reflector jamming,an identification method of corner reflector based on multi-feature fusion of polarization and high resolution range profile(HRRP)is proposed.Firstly,combining the experimental data in three scenarios,the target echo signals of radar seeker are extracted from the sea clutter.Secondly,five range profile features,such as peak number and radial dimension,and three polarization features,such as mean of polarization coherence,are analyzed from the corner reflector and ship echoes.The processing results of the experimental data show that the feature difference is obvious between the ship and the single corner reflector,while the difference decreases between the ship and the array.Then,using the support vector machine(SVM)method,five tests are designed based on the experimental data,and the discrimination performance of single-feature and multi-feature fusion is examined respectively.The test results show that the single-feature identification method is not stable,while the proposed three-feature fusion identification method is more robust,and the identification accuracy reaches more than 92.86% in five tests.
作者
韩静雯
杨勇
连静
吴国庆
王雪松
HAN Jingwen;YANG Yong;LIAN Jing;WU Guoqing;WANG Xuesong(College of Electronic Science and Technology,National University of Defense Technology,Changsha 410073,China;Beijing Institute of Electronic Engineering,Beijing 100854,China)
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2024年第11期3658-3670,共13页
Systems Engineering and Electronics
基金
国家自然科学基金(62171447)资助课题。
关键词
雷达导引头
角反射器
目标鉴别
抗干扰
radar seeker
corner reflector
target identification
anti-jamming
