微多普勒生命探测方法研究

项目名称： 微多普勒生命探测方法研究

项目编号： No.61201318

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 张耀天

作者单位： 北京航空航天大学

项目金额： 25万元

中文摘要： 生命探测对抗震救灾、医疗看护、反恐等领域有着重要意义。本项目将研究"微多普勒生命探测方法"。生命体目标的微动会对雷达回波信号产生微多普勒频率调制，通过提取雷达回波中包含的微多普勒特征对微动参数进行估计，可以反演生命体目标微动状态，有望为生命探测提供更多信息，有利于提高探测效率。但是如何从雷达回波信号中提取微弱的目标信息、如何进行生命体状态估计的方法尚待研究。本项目将采用理论分析、算法仿真和实验室数据验证的研究途径，开展生命体典型微动建模、微多普勒参数提取方法、生命体状态估计方法、提取与估计方法性能评估等关键技术研究，以便阐明生命体典型微运动与雷达回波信号特征之间的内在联系，从而得到高精度提取微多普勒参数和估计生命体状态方法。本项目的研究成果不仅可用于抗震救灾、反恐等领域，而且可用于非损伤式生物状态检测等医学研究领域。同时研究过程中将培养多名博士、硕士研究生，形成多篇高水平论文和专利。

中文关键词： 雷达微多普勒；行人；时频分析；目标识别；参数估计

英文摘要： Life detection is of great significance for earthquake relief, medical care, anti-terrorism and other fields.This project will carry out research on the method of life-detection by micro-Doppler.Micro-motion of the human target can introduce micro-Doppler frequency modulation to the radar returns. We can estimate the micro-motion parameters through extracting the micro-Doppler feature effectively, and inverse the dynamic states of human body. It's expected to provide more information for life detection, and help to improve the detection efficiency. But the method of how to extract weak target information from the radar return signal, and how to estimate life state is still in process. In order to elucidate the intrinsic link between the typical micro-motion of human body and the radar echo signal characteristics, and to acquire the method of getting high-precision extraction of micro-Doppler parameters and estimation of life state, this project will conduct study on several key technologies. These key technologies include the modeling of typical micro-motion of human body, the method of micro-Doppler parameters extraction, the method of life state estimation, and performance evaluation of above methods. And to reach this target, we will apply the theoretical analysis, algorithm simulation and laboratory data val

英文关键词： radar micro-Doppler；walking human；time frequency analysis；target recognition；parameter estimation