摘要
针对单元平均恒虚警检测器(CA-CFAR)在多目标干扰和杂波边缘效应下的性能局限,提出了基于子参考窗口中最小选择单元的恒定虚警检测器(MCA-CFAR)。通过选择子参考单元中的最小单元格,显著提升了检测器的性能,并在瑞利分布背景下详细推导了检测概率、虚警率和检测阈值。为进一步优化性能,设计了模糊逻辑融合检测器(FUMCA-CFAR),它利用两个传感器计算空间隶属函数值,并通过代数和、代数积、MAX、MIN四种规则进行融合,实现了平滑输出,减少了目标信息的丢失。仿真实验表明,基于代数和融合的FUMCA-CFAR检测器在均匀和非均匀背景下均展现出优异的检测性能和抗干扰能力。
Aiming at the performance limitations of the cell-averaged constant false alarm detector(CA-CFAR)in the presence of multi-target interference and clutter fringe effects,a constant false alarm detector(MCA-CFAR)based on the minimum selection cell in the sub-reference window is proposed.The performance of the detector is significantly improved by selecting the smallest cell in the sub-reference cell,and the detection probability,false alarm rate and detection threshold are derived in detail in the context of Rayleigh distribution.To further optimize the performance,a fuzzy logic fusion detector(FUMCA-CFAR)is designed,which uses two sensors to compute the spatial affiliation function values and fuses them by four rules,namely,algebraic sum,algebraic product,MAX,and MIN,to achieve a smooth output and reduce the loss of target information.Simulation experiments show that the FUMCA-CFAR detector based on algebraic sum fusion exhibits excellent detection performance and anti-jamming ability in both uniform and non-uniform backgrounds.
作者
张正文
熊小泽
廖桂生
巩朋成
朱鑫潮
ZHANG Zhengwen;XIONG Xiaoze;LIAO Guisheng;GONG Pengcheng;ZHU Xinchao(School of Electrical and Electronic Engineering,Hubei University of Technology,Wuhan Hubei 430068,China;National Lab of Radar Signal Processing,Xidian University,Xi′an Shaanxi 710071,China;School of Computer Science and Engineering,Wuhan Institute of Technology,Wuhan Hubei 430205,China)
出处
《现代雷达》
CSCD
北大核心
2024年第2期78-85,共8页
Modern Radar
关键词
单元平均恒虚警检测器
杂波边缘效应
模糊融合
空间隶属函数值
cell-averaged constant false alarm detector
clutter edge effect
fuzzy fusion
spatial affiliation function value
作者简介
张正文,男,1965年生,副教授,硕士生导师,研究方向为语音信号处理、雷达信号处理、信号融合;熊小泽,男,1997年生,硕士研究生,研究方向为雷达信号处理、雷达算法;廖桂生,男,1963年生,教授、博士生导师,研究方向为空时自适应处理、天基预警、多维度一体化波形设计和阵列信号处理;巩朋成,男,1982年生,博士,副教授,硕士生导师,研究方向为MIMO雷达信号处理、阵列信号处理、麦克风阵列信号处理等;朱鑫潮,男,1995年生,硕士研究生,研究方向为雷达信号处理、雷达算法。
