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K分布海杂波背景下基于最大特征值的雷达信号检测算法

赵文静 刘畅 刘文龙 金明录

赵文静, 刘畅, 刘文龙, 金明录. K分布海杂波背景下基于最大特征值的雷达信号检测算法[J]. 电子与信息学报, 2018, 40(9): 2235-2241. doi: 10.11999/JEIT171092
引用本文: 赵文静, 刘畅, 刘文龙, 金明录. K分布海杂波背景下基于最大特征值的雷达信号检测算法[J]. 电子与信息学报, 2018, 40(9): 2235-2241. doi: 10.11999/JEIT171092
Wenjing ZHAO, Chang LIU, Wenlong LIU, Minglu JIN. Maximum Eigenvalue Based Radar Signal Detection Method for K Distribution Sea Clutter Environment[J]. Journal of Electronics & Information Technology, 2018, 40(9): 2235-2241. doi: 10.11999/JEIT171092
Citation: Wenjing ZHAO, Chang LIU, Wenlong LIU, Minglu JIN. Maximum Eigenvalue Based Radar Signal Detection Method for K Distribution Sea Clutter Environment[J]. Journal of Electronics & Information Technology, 2018, 40(9): 2235-2241. doi: 10.11999/JEIT171092

K分布海杂波背景下基于最大特征值的雷达信号检测算法

doi: 10.11999/JEIT171092
基金项目: 国家自然科学基金(61401059)
详细信息
    作者简介:

    赵文静:女,1990年生,博士生,研究方向为信息几何及雷达目标检测

    刘畅:男,1988年生,博士生,研究方向为认知无线电频谱感知技术、统计信号处理、随机矩阵理论等

    刘文龙:男,1973年生,教授,博士生导师,主要研究方向为MIMO及SM系统检测问题等

    金明录:男,1958年生,教授,博士生导师,主要研究方向为信号与通信系统基础理论与技术

    通讯作者:

    金明录  mljin@dlut.edu.cn

  • 中图分类号: TN957.51

Maximum Eigenvalue Based Radar Signal Detection Method for K Distribution Sea Clutter Environment

Funds: The National Natural Science Foundation of China (61401059)
  • 摘要: 针对K分布海杂波背景下的恒虚警检测问题,基于信息几何的矩阵CFAR检测器具有较好的检测性能,但其计算复杂度较高,从而影响其实际应用。该文根据奈曼-皮尔逊准则,推导了似然比检测统计量与最大特征值之间的关系,进而提出了基于最大特征值的矩阵CFAR检测方法(M-MED)。最后通过对所提方法的计算复杂度及仿真实验结果的分析表明了所提方法不仅计算复杂度低且具有较好的检测性能。
  • 图  1  基于最大特征值的CFAR检测器的检测机制

    图  2  短脉冲序列、无杂比波谱展宽场景下的检测性能比较

    图  3  短脉冲序列条件下无杂波谱展宽、有杂波谱展宽场景下的检测性能比较

    图  4  杂波谱宽度为80 Hz,短脉冲序列和长脉冲序列条件下的检测性能比较

    图  5  形状参数对检测性能的影响

    图  6  基于实测数据的检测性能比较

    表  1  不同方法的计算复杂度比较

    算法 协方差矩阵 指数运算 对数运算 幂运算 特征值分解O(M3) 基本运算量
    本文M-MED × × × $N$
    KLD × × × × $O(M! + (N + 3){M^3} + 2{M^2} + M)$
    REM $O({n_t}((N + 2){M^3} + 3N{M^2}) + {M^3} + 2{M^2} + 2M - 1)$
    LD × × × × $M! + (N + 4){M^3} + 2{M^2} + M$
    LE × $(N + 2){M^2} + 2M - 1$
    Bha × × × × $O({n_t}((N + 1){M^3} + (2N + 1){M^2}) + 3M! + 2{M^2} + 3)$
    HEL × × × × $O({n_t}(3NM! + (N + 3){M^3} + 4N{M^2}) + 3M! + 2{M^2} + 4)$
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-11-20
  • 修回日期:  2018-05-21
  • 网络出版日期:  2018-07-12
  • 刊出日期:  2018-09-01

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