电讯技术2025，Vol.65Issue(11)：1929-1936,8.DOI:10.20079/j.issn.1001-893x.240314003
一种新颖的多人呼吸和心跳信号提取方法
A Novel Method for Multi-person Respiratory and Heartbeat Signals Extraction
摘要
Abstract
For the problems of multi-person vital sign detection at the same distance and extraction of heartbeat signals under the interference of respiratory higher harmonics,an algorithm based on digital beamforming and orthogonal projection filter(OPF)is proposed.After the radar measures multiple baseband signals,digital beamforming is first performed to obtain the vital sign signals of people by generating multiple beams pointing to the subjects in space.Then,using the OPF,the obtained vital sign signals are projected onto the null space of their respective respiratory higher harmonics to achieve the removal of respiratory higher harmonic interference and the real-time acquisition of heartbeat signals.The results of multi-person experiments show that the proposed algorithm can successfully separate the detection of multi-person vital sign signals and the extraction of heartbeat signals,and the accuracy rate of heartbeat frequency estimation is as high as 99.68%.关键词
多人生命体征检测/呼吸高次谐波/心跳信号提取/数字波束合成/正交投影滤波器Key words
multi-person vital signs detection/respiration harmonic/heartbeat signal extraction/digital beamforming/orthogonal projection filter分类
信息技术与安全科学引用本文复制引用
司军,刘应盼,熊俊军,柏磊,吴俭,丁传威..一种新颖的多人呼吸和心跳信号提取方法[J].电讯技术,2025,65(11):1929-1936,8.基金项目
国家自然科学基金青年科学基金项目(62201259) （62201259）
