相参雷达时频域CFAR检测门限获取方法研究

doi:10.3969/j.issn.0372-2112.2013.08.029

电子学报 ›› 2013, Vol. 41 ›› Issue (8): 1634-1639.DOI: 10.3969/j.issn.0372-2112.2013.08.029

相参雷达时频域CFAR检测门限获取方法研究

陈建军^1,2, 黄孟俊¹, 赵宏钟¹, 付强¹

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

收稿日期:2011-03-17 修回日期:2013-04-22 出版日期:2013-08-25
- 作者简介:
- 陈建军 男,1981年出生,天津武清人.现为63620部队工程师.主要研究方向:雷达信号处理、雷达目标检测与识别. E-mail:jjchen@nudt.edu.cn 黄孟俊 男,1982年出生,湖南益阳人.现为国防科技大学ATR实验室博士研究生.主要研究方向:雷达信号处理、雷达抗干扰技术研究.

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

CHEN Jian-jun^1,2, HUANG Meng-jun¹, ZHAO Hong-zhong¹, FU Qiang¹

1. ATR Lab, National Univ. of Defense Technology, Changsha, Hunan 410073, China;
2. Unit 63620, Jiuquan, Gansu 732750

Received:2011-03-17 Revised:2013-04-22 Online:2013-08-25 Published:2013-08-25

摘要/Abstract

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.

关键词: 相参雷达, 恒虚警, 距离-多普勒, 海杂波, 最小二乘法

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.

Key words: coherent radar, constant false alarm rate(CFAR), range-Doppler, sea clutter, least square method

中图分类号:

TN957.51

陈建军, 黄孟俊, 赵宏钟, 等. 相参雷达时频域CFAR检测门限获取方法研究[J]. 电子学报, 2013, 41(8): 1634-1639.

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.

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相参雷达时频域CFAR检测门限获取方法研究

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

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