摘要
研究了基于高阶谱的时间延迟估计原理及其算法,并将其应用到基于冲击反射法的双传感器测量应力波波速方法中,解决了传统的直接观察法中人为误差的影响和噪声对测量精度的影响问题,降低了测量误差,波速数据具有更好的一致性.
A time-delay estimation algorithm and theory based on higher order spectrum function is stu(died.)This algorithm has been applied to wave speed evaluation when wave speed of concrete structures is measured by two transducers.The influence of observation error and noise are eliminated when higher order spectrum based time-delay evaluation is used.Measurement errors are reduced and wave speed data are more consistent.
出处
《集美大学学报（自然科学版）》
CAS
北大核心
2004年第4期355-358,共4页
Journal of Jimei University：Natural Science
基金
交通部"通达计划"资助项目(95-06-02-04).
关键词
高阶谱时延估计
混凝土
波速测量
higher order spectrum time delay
concrete
wave speed measurement
