一种改进的二维相控阵数字多波束目标检测策略  

An Improved Two-dimension Phased Array Digital Multi-beam Target Detection Strategy

作　　者：薛燕[1] 龚政 周明杰 XUE Yan;GONG Zheng;ZHOU Ming-jie(No.36 Research Institute of CETC,Jiaxing Zhejiang 314033,China)

机构地区：[1]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2023年第4期24-27,49,共5页Communication Countermeasures

摘　　要：随着数字阵列天线的日益普及,信号处理系统面临着对海量数据进行实时处理的挑战。阐述了改进后的二维相控阵数字多波束信号处理系统的结构和处理流程。二维相控阵数字多波束需要实现方位角和仰角的电子扫描,这就对系统的处理性能提出更高的要求。提出了一种双门限将变指数恒虚警率(DT一VI-CFAR)和基于卷积构型的单元平均恒虚警率(CCA-CFAR)相结合的检测策略。实际验证表明,与传统的2-DCA-FAR相比,该检测策略显著降低了复杂性,同时与传统VI-CFAR相比,该检测策略提高了检测概率。With the increasing use of digital array antenna,signal processing systems are faced with the challenge of real time processing for a mass of data.This paper illustrates the improved signal processing system architecture and processing flow for two-dimensional(2-D)phased array digital multi-beam.2-D phased array digital multi-beam is required to achieve electronically scanning in both azimuth and elevation,which demands higher processing performance of the system.A new detection strategy which combines dual-threshold variable index constant false alarm(DI-VI-CFAR)and Convolution based Cell Average CFAR(CCACFAR)is proposed.Practical validation shows that this detection strategy significantly reduces the complexity compared to traditional 2-D CA-CFAR,while improving the detection probability compared to traditional VI-CFAR.

关 键 词：多波束 信号处理 CA-FAR DBF 

分 类 号：TN911.7[电子电信—通信与信息系统]