基于群微动特征的人体目标高分辨率雷达探测技术研究

项目名称： 基于群微动特征的人体目标高分辨率雷达探测技术研究

项目编号： No.61301265

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 李晋

作者单位： 电子科技大学

项目金额： 30万元

中文摘要： 利用雷达探测人体运动特征在疗养院、医院等场所有广泛应用需求，也可应用于安全防护、战场侦察等领域，是当前雷达技术领域的研究热点之一。利用太赫兹雷达大带宽、高分辨的特性结合人体微动特征，是实现人体目标的高精度探测与识别的有效技术途径。然而，高分辨率引起的多散射中心化与各散射中心独立微动相结合导致了极为复杂的目标散射中心群微动特征，降低了太赫兹雷达的目标探测性能。因此，有必要针对太赫兹雷达开展人体目标高精度探测理论与方法研究。 本课题结合太赫兹雷达系统理论与人体典型微动特征模型，开展人体运动目标幅度-微多普勒联合特征建模、多散射中心信号分离、微动特征参数提取及基于微动特征的目标检测方法研究，可在人体微动特征高精度提取及多散射中心联合特征检测方面取得创新性成果，有效提高太赫兹频段下非刚性微动目标的检测性能，实现太赫兹频段人体目标高精度探测。

中文关键词： 太赫兹；微多普勒；人体目标；信号分离；参数提取

英文摘要： Utilizing radar to detect human gait has extensive applications in many places, such as sanatorium, hospital and etc, Besides that, it can be used in other fields like safety protection, battle reconnaissance and so on, it is one research hotspot in modern radar technology. Cosidering Terahertz radar's wide bandwidth, high resolution, combining with the human body micro features, it is an effective technological approaches to realize human target's high resolution detection and recognition. Hoever, scattering centralization induced by high resolution and independent micro-motion of each scattering center will lead to complicated cluster micro-motion characteristic of scattering center, which degrades radar's detection capability. So it is neccessary to do research on developing human target's high resolution detection theories and methods for Terahertz radar. This project utilizes typical model of human micro characteristic to separate signal of multi scattering centers, extract micro-motion characteristic parameters and do research on target's detection methods based on micro-motion characteristics, which will acquire creative achievements in aspects of high resolution extraction of human target's micro-motion characteristics and combined feature detection of multi scattering centers, effectively improve detect

英文关键词： Terahertz；Micro-Doppler；Human Body；Signal Separation；Parameter Extraction