摘要
人体行走的微动研究始于90年代末,而后发展迅速,雷达对人体的探测有着其他传感器不具备的优势,现阶段主要集中在对于实测数据的分析上,而缺乏系统的理论和模型分析。首先针对人体目标雷达回波信号的作用机理,对现有的人体运动学模型进行了改进,在人体微运动结构方面主要考虑了人摆腿和摆臂的前后向运动。同时将人体结构简化为简单几何形状的均匀刚体,将人体四肢简化为均匀散射的线模型,在理论上给出了人体目标微运动产生的雷达回波模型,最后进行仿真,证明了本模型的正确性和有效性。
Research on micro-motion of human walking started from the end of 1990s and developed rapidly in the following time.As for human body detecting,radar has an advantage that other sensors do not have.At present,research is mainly concentrated on analysis to practically measured data,and systematical theoretical and modeling analysis is lacked.The present human walking model was firstly modified based on function mechanism of human target radar echo signal.As for human micro-motion structure,back-forward motion of human legs and arms was mainly considered.Simultaneously,human structure was simplified into an even rigid body of simple geometry,limbs were simplified into evenly scattered lineal model,radar echo model of human target micro-motion in theory was provided,and finally correctness and effectiveness of the model in the article through simulation were proved.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2011年第3期438-445,共8页
Journal of System Simulation
关键词
人体微动
人体运动建模
微多普勒
雷达特征
human micro-motion
human walking model
micro-Doppler
radar feature
