基于自适应波束形成技术的相邻目标生命体征检测  

Vital Signs Detection of Adjacent Targets with Adaptive Digital Beamforming Technique

作　　者：熊俊军 司军 陈家瑞 马振康 柏磊 吴俭 丁传威 XIONG Junjun;SI Jun;CHEN Jiarui;MA Zhenkang;BAI Lei;WU Jian;DING Chuanwei(The 723rd Research Institute of CSSC,Yangzhou 225101,China;Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]中国船舶集团有限公司第七二三研究所,江苏扬州225101 [2]南京理工大学,江苏南京210094

出　　处：《雷达科学与技术》2024年第5期532-540,548,共10页Radar Science and Technology

基　　金：国家自然科学基金(No.62201259)。

摘　　要：基于雷达传感器的非接触式生命体征检测作为一种新型生物医学传感技术在近十几年获得了迅猛的发展。现有的大部分生命体征检测工作受限于雷达体制或者分辨率,无法分离出检测场景中多个位于同一距离、同一波束相邻目标的生命体征信号。针对相邻目标生命体征检测的需求,提出了一种基于自适应波束形成的算法,来实现相邻目标生命体征信号的同时检测。利用自适应波束形成算法生成指向待测受试者的波束,同时在相邻干扰受试者所在角度处生成零陷,实现相邻目标的生命体征检测。实验结果表明,利用本文提出方法能够成功分离出同一距离上的相邻受试者的生命体征信号。Non⁃contact vital sign detection based on radar has gained rapid development as a new biomedical sensing technology in the past decades.However,most of existing works are limited by the radar system or angular resolution,which cannot separate the vital signs of adjacent targets located at the same distance and the same beam.For adjacent target vital signs detection,an algorithm based on adaptive beamforming is proposed to realize the simultaneous detection of adjacent target vital signs signals.The adaptive digital beamforming algorithm is used to generate a beam pointing to the tested targets.A null is generated at the angle of the adjacent interfering targets at the same time.As a result,the vital signs of adjacent targets can be obtained.The experimental results show that the vital signs of adjacent targets at the same distance can be successfully separated using the proposed method.

关 键 词：自适应波束形成 多普勒雷达 相邻目标生命体征检测 

分 类 号：TN959.6[电子电信—信号与信息处理]