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广义Pareto分布海杂波背景下非相干检测器恒虚警性能分析

张坤 水鹏朗

张坤, 水鹏朗. 广义Pareto分布海杂波背景下非相干检测器恒虚警性能分析[J]. 电子与信息学报, 2021, 43(3): 523-530. doi: 10.11999/JEIT200644
引用本文: 张坤, 水鹏朗. 广义Pareto分布海杂波背景下非相干检测器恒虚警性能分析[J]. 电子与信息学报, 2021, 43(3): 523-530. doi: 10.11999/JEIT200644
Kun ZHANG, Penglang SHUI. CFAR Analysis of Non-coherent Detectors in Generalized Pareto Distributed Sea Clutter[J]. Journal of Electronics and Information Technology, 2021, 43(3): 523-530. doi: 10.11999/JEIT200644
Citation: Kun ZHANG, Penglang SHUI. CFAR Analysis of Non-coherent Detectors in Generalized Pareto Distributed Sea Clutter[J]. Journal of Electronics and Information Technology, 2021, 43(3): 523-530. doi: 10.11999/JEIT200644

广义Pareto分布海杂波背景下非相干检测器恒虚警性能分析

doi: 10.11999/JEIT200644
基金项目: 国家自然科学基金(61671357)
详细信息
    作者简介:

    张坤:男,1989年生,博士生,研究方向为压缩感知、雷达信号处理和海面目标检测及其参数估计

    水鹏朗:男,1967年生,教授,博士生导师,研究方向为雷达目标探测、图像处理和滤波器组设计与应用

    通讯作者:

    张坤 xidiankun@163.com

  • 中图分类号: TN959.72

CFAR Analysis of Non-coherent Detectors in Generalized Pareto Distributed Sea Clutter

Funds: The National Natural Science Foundation of China (61671357)
  • 摘要: 该文在广义Pareto分布海杂波背景下研究了单元平均(CA)和有序统计量(OS)两种非相干检测器的恒虚警(CFAR)性质,推导了两种非相干检测器的虚警概率公式,发现了两种检测器对杂波的尺度参数是恒虚警的。然而,两种检测器对杂波的散斑协方差矩阵结构和杂波形状参数是非恒虚警的。为了实现全场景的恒虚警检测,预先通过白化方法将具有相关性的海杂波去相关,并通过查表方法使用了匹配杂波形状参数、累积脉冲数和参考单元数的检测门限。在这种情况下,实验结果表明两种非相干检测器能确保全场景恒虚警。
  • 图  1  全场景CFAR检测的CA-CFAR和OS-CFAR检测器的原理框图

    图  2  CA-CFAR和OS-CFAR检测器的检测门限随着散斑协方差矩阵结构参数的变化情况

    图  3  预白化处理的CA-CFAR和OS-CFAR检测器检测门限随着散斑协方差矩阵结构参数的变化情况

    图  4  CA-CFAR和OS-CFAR检测器的检测门限随形状参数的变化情况

    图  5  3组数据的幅度图

    图  6  3组数据的幅度分布拟合结果

    图  7  全场景CFAR的CA-CFAR和OS-CFAR检测器在3组数据不同目标信杂比情况下的检测概率

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出版历程
  • 收稿日期:  2020-07-24
  • 修回日期:  2021-01-20
  • 网络出版日期:  2021-01-29
  • 刊出日期:  2021-03-22

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