摘要
研究了基于互双谱的时间延迟估计方法及其算法 ,并开展了基于冲击反射法的双传感器波速测量实验 ,将互双谱变换应用到波速估计中 ,解决了直接观察法中人为误差的影响和噪声对测量精度的影响。
Bispectrum based time delay estimation algorithm is studied in this paper. Impact-echo experiments are carried out for measuring wave speed of concrete structure by two displacement transducers. The bispectrum based time delay algorithm has been applied to wave speed evaluation. The influence of observation error and noise are eliminated. Experiment results are satisfied.
出处
《武汉理工大学学报》
CAS
CSCD
2003年第11期67-69,79,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金 (5 0 2 75 10 9)
交通部"通达计划"(95 - 0 6 - 0 2 - 0 4 )
关键词
双谱
时间延迟估计
波速测量
bispectrum
time delay evaluation
wave speed measurement
