基于四元数的人运动雷达回波计算方法  

Computing Method of Radar Echo of Human Motion Based on Quaternion

作　　者：李飞[1] 黄斌科[1] 冯恩信[1] 汪文秉[1] 

机构地区：[1]西安交通大学电信学院微波所,陕西西安710049

出　　处：《探测与控制学报》2010年第2期38-41,46,共5页Journal of Detection & Control

基　　金：陕西省自然科学基础研究计划项目资助(2007F34)

摘　　要：人运动的雷达散射回波的获取是研究人微多普勒特征的关键问题。在计算运动人体各部件位置时,常用的欧拉角方法存在复杂矩阵运算等问题,因此针对一个常用的运动模型特点,提出利用四元数方法进行各部件位置计算。四元数法可以有效地减少矩阵运算。应用该方法仿真获得的人体运动散射回波与国外实测数据对比结果表明了其正确性。对合成回波的时频分析结果表明,人运动的微运动特征可以提供有价值的信息,并有望用于人体目标的识别。How to get the proper radar echo is a key problem in research of the micro-doppler features of human beings. When calculating the position of human body, the conventional Euler angle method needs complex matrix operations. Thus a typical human model is displayed to describe the human motion and the positions of each part are calculated using the quaternion method which can reduce the matrix operations. The simulations prove the method is correct. Time-frequency transform is used to analyze the micro-doppler features. There is valuable information in the spectrum,which can also he used in the further research of the recognition of human targets.

关 键 词：微多普勒 四元数 人体模型 时频分析 

分 类 号：TN95[电子电信—信号与信息处理]