删除或更新信息,请邮件至freekaoyan#163.com(#换成@)

用于AIS实时信号稀疏表示的追踪算法研究

本站小编 Free考研考试/2024-01-16

-->
怀率恒,张淑芳.用于AIS实时信号稀疏表示的追踪算法研究[J].,2018,58(5):533-538
用于AIS实时信号稀疏表示的追踪算法研究
Research on pursuit algorithms for sparse representation of AIS real-time signal
DOI:10.7511/dllgxb201805014
中文关键词:船舶自动识别系统(AIS)稀疏表示实时信号基追踪(BP)正交匹配追踪(OMP)
英文关键词:automatic identification system (AIS)sparse representationreal-time signalbasis pursuit (BP)orthogonal matching pursuit (OMP)
基金项目:国家自然科学基金资助项目(61231006,61501078,61501079).
作者单位
怀率恒,张淑芳
摘要点击次数:844
全文下载次数:928
中文摘要:
为解决非周期船舶自动识别系统(AIS)信号的载波跟踪问题,利用信号稀疏表示方法对AIS实时信号进行重构,以获得AIS信号的信道信息,从而为实现定位信息的测量打下基础.从AIS信号特点和AIS实时信号处理的要求出发,对基于K-SVD算法所构造的自适应冗余字典,从信号处理时间、稀疏表示精度、误码率和受噪声的影响几方面对比了基追踪(BP)和正交匹配追踪(OMP)两种不同的追踪算法.实验结果表明,两种算法都能有效精确地重构AIS信号,BP算法相比OMP算法具有更好的稀疏表示精度和误码率,但是信号处理时间会更长.由于AIS对实时性的高要求,OMP算法更适合用于AIS自主定位系统.
英文摘要:
For the carrier tracking problem of non-periodic automatic identification system (AIS) signal, the signal sparse representation is used to reconstruct the AIS real-time signal to obtain the channel information of AIS signal, thereby lay the foundation for realizing the measurement of positioning information. Based on the characteristics of AIS signals and the requirements of AIS real-time signal processing, for the adaptive redundant dictionary based on the K-SVD algorithm, two kinds of pursuit algorithms, basis pursuit (BP) and orthogonal matching pursuit (OMP), are compared in terms of the signal processing time, sparse representation accuracy, error rate and noise impact. The experimental results indicate that both of the algorithms can effectively and accurately reconstruct AIS signal, the BP algorithm has better sparse representation accuracy and error rate than the OMP algorithm, but the signal processing time is longer. Due to the high requirements of real-time performance of the AIS, the OMP algorithm is more suitable for the AIS autonomous positioning system.
查看全文查看/发表评论下载PDF阅读器
关闭
相关话题/

  • 领限时大额优惠券,享本站正版考研考试资料!
    大额优惠券
    优惠券领取后72小时内有效,10万种最新考研考试考证类电子打印资料任你选。涵盖全国500余所院校考研专业课、200多种职业资格考试、1100多种经典教材,产品类型包含电子书、题库、全套资料以及视频,无论您是考研复习、考证刷题,还是考前冲刺等,不同类型的产品可满足您学习上的不同需求。 ...
    本站小编 Free壹佰分学习网 2022-09-19