Research on Estimated Threshold of CFAR Detection in Time-Frequency Domain for Coherent Radar

CHEN Jian-jun; HUANG Meng-jun; ZHAO Hong-zhong; FU Qiang

doi:10.3969/j.issn.0372-2112.2013.08.029

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Research on Estimated Threshold of CFAR Detection in Time-Frequency Domain for Coherent Radar

更新时间：2025-07-16

- Research on Estimated Threshold of CFAR Detection in Time-Frequency Domain for Coherent Radar
- Acta Electronica Sinica Vol. 41, Issue 8, Pages: 1634-1639(2013)
- 作者机构：
  
  1. 国防科技大学电子科学与工程学院ATR重点实验室,湖南,长沙,410073
  2. 63620部队,甘肃,酒泉,732750
  3. 国防科技大学电子科学与工程学院ATR重点实验室,湖南,长沙,410073
  4. 63620部队,甘肃,酒泉,732750
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0372-2112.2013.08.029
  CLC： TN957.51
- Published：2013
- 稿件说明：
移动端阅览
CHEN Jian-jun, HUANG Meng-jun, ZHAO Hong-zhong, et al. Research on Estimated Threshold of CFAR Detection in Time-Frequency Domain for Coherent Radar[J]. Acta Electronica Sinica, 2013, 41(8): 1634-1639.
DOI：

CHEN Jian-jun, HUANG Meng-jun, ZHAO Hong-zhong, et al. Research on Estimated Threshold of CFAR Detection in Time-Frequency Domain for Coherent Radar[J]. Acta Electronica Sinica, 2013, 41(8): 1634-1639. DOI： 10.3969/j.issn.0372-2112.2013.08.029.

摘要

相参雷达体制下采用时频域处理的CFAR检测器面临的一个共性问题就是由于时频域杂波模型与实际不匹配

以及数据样本有限导致的模型参数无法准确估计

进而导致实际检测器性能总是与理论设计有较大差距.为此

本文通过分析相参雷达时频域恒虚警(CFAR)检测门限与虚警概率的函数关系

提出一种基于最小二乘拟合的检测门限获取方法

并给出了其工程实现途径.最后

采用实测数据对该方法进行检测性能仿真实验

实验结果表明

提出的检测门限获取方法有效可行

具有很好的工程应用前景.

Abstract

For the constant false alarm rate(CFAR)detector of coherent radar in time-frequency domain

there is always a wide performance gap between the theoretical model and the practical result.Ultimately

this problem is caused by the imperfect model of the clutter

as well as the limited samples.A novel method of estimating the detection threshold is proposed in this paper.The method is based on the least square criteria and derived from the relationship between the CFAR detection threshold and the probability of false alarm.The implementation for the proposed method is given as well.Simulation results confirm the validity of the proposed method.

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Related Author

FU Qiang

ZHAO Hong-zhong

QIU Wei

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CHEN Jian-jun

HE You

HUANG Yong

GUAN Jian

Related Institution

ATR Laboratony,School of Electronic Science and Engineering,National University of Defense Technology

Training Brigade of Received and Rectified EquipemntNaval Aeronautical and Astronautical UniversityYantaiShandong264001China

Department of Electronic and Information EngeeringNaval Aeronautical and Astronautical UniversityYantaiShandong 264001China

Training Brigade of Received and Rectified Equipemnt,Naval Aeronautical and Astronautical University

Department of Electronic and Information Engeering,Naval Aeronautical and Astronautical University

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