基于局部顺序统计量的分布式多脉冲检测  

Distributed Multi-Pulse Detection with Local Order Statistics

作　　者：窦法兵 张曼[1] 周生华[1] 孙伟[2] 邵文佳 DOU Fabing;ZHANG Man;ZHOU Shenghua;SUN Wei;SHAO Wenjia(National Key Laboratory of Radar Signal Processing,Xidian University,Xi’an Shaanxi 710071,China;Nanjing Institute of Electronic Technology,Nanjing Jiangsu 210039,China)

机构地区：[1]西安电子科技大学雷达信号处理全国重点实验室,陕西西安710071 [2]南京电子技术研究所,江苏南京210039

出　　处：《海军航空大学学报》2025年第2期285-291,302,共8页Journal of Naval Aviation University

基　　金：国家自然科学基金(62371384)。

摘　　要：目标融合检测问题是分布式雷达的研究热点。传统的基于单元平均恒虚警率(Cell-Averaging Constant False Alarm Rate,CA-CFAR)的融合检测算法在非均匀背景下面临探测性能损失的问题。为了解决这一问题,针对分布式多脉冲(Distributed Multi-Pulse,DM)雷达,提出了一种基于顺序统计量恒虚警率(Ordered-Statistics Constant False Alarm Rate,OS-CFAR)的融合检测算法(DMOS-CFAR):首先,在局部雷达的每个多普勒通道进行OS-CFAR并行处理;然后,将各距离单元不同多普勒通道上的统计量最大值传输至融合中心,并在融合中心实现给定虚警下的信号级融合检测。数值仿真表明:在多假目标干扰与杂波边缘场景下,DMOS-CFAR算法比分布式多脉冲CA-CFAR算法(DMCA-CFAR)检测性能更优;在均匀背景下,顺序值约为3n/4时,DMOS-CFAR算法检测性能最佳。Target fusion detection is a prominent research topic in distributed radar systems.Traditional fusion detection algorithms based on the Cell-Averaged Constant False Alarm Rate(CA-CFAR)suffer from performance degradation in non-homogeneous backgrounds.To address this challenge,a fusion detection algorithm based on the Ordered Statistic Constant False Alarm Rate(OS-CFAR)for Distributed Multi-Pulse(DM)radar is proposed,termed DMOS-CFAR.Firstly,OS-CFAR processing is conducted in parallel across each Doppler channel of local radars.Subsequently,the maximum value of the test statistics from different Doppler channels for each range cell is transmitted to the fusion center,where signal-level fusion detection is performed under a specified false alarm rate.Numerical simulations demonstrate that the DMOS-CFAR algorithm outperforms the Distributed Multi-Pulse CA-CFAR(DMCA-CFAR)algorithm in scenarios involving multiple false interference targets and clutter edge conditions.In homogeneous backgrounds,the DMOS-CFAR algorithm achieves optimal detection performance when the order parameter is approximately 3n/4.

关 键 词：顺序统计量 分布式多脉冲 融合检测 恒虚警率 信号级融合 分布式雷达 融合中心 

分 类 号：V221.3[航空宇航科学与技术—飞行器设计] TB553[理学—物理]