摘要
特殊的船舶结构和船体震动对信号造成的严重多径和噪声干扰使现有入侵检测方法在船载环境使用存在较大局限性.通过对船载环境中的信号传播特性进行研究分析,提出基于信道状态信息的非接触式入侵检测方法,充分利用WIFI信号的幅值和相位信息,同时,基于子载波敏感度的差异性现象提出敏感子载波的评价模型,通过筛选对环境更加敏感的子载波对环境进行更加精细地感知.实船测试结果表明,入侵检测精确度可达95%以上,验证了入侵检测系统的鲁棒性和可靠性.
Due to the severe multi-path and noise interference caused by the special ship structure and hull vibration, the existing intrusion detection methods have great limitations in the shipborn environment. Based on the analysis of signal propagation characteristics in shipborn environment, a non-contact intrusion detection method based on channel state information was proposed, which fully utilized the amplitude and phase information of the WIFI signal. Based on the difference of sub-carrier sensitivity, an evaluation model of sensitive sub-carriers was proposed. By screening sub-carriers which are more sensitive to the environment, the environment is more finely perceived. The actual ship test results show that the accuracy of intrusion detection can reach more than 95%, which verifies the robustness and reliability of the intrusion detection system.
作者
陈家豪
刘克中
陈默子
马杰
王晓琼
CHEN Jia-hao;LIU Ke-zhong;CHEN Mo-zi;MA Jie;WANG Xiao-qiong(School of Navigation/Hubei Key Laboratory of Inland Shipping Technology,Wuhan University of Technology,Wuhan 430063,China)
出处
《大连海事大学学报》
CAS
CSCD
北大核心
2019年第1期89-95,共7页
Journal of Dalian Maritime University
基金
湖北省技术创新专项重大项目(2017AAA120)
关键词
船载环境
入侵检测
信道状态信息
敏感子载波
shipborn environment
intrusion detection
channel state information
sensitive sub-carriers
