摘要
假设随机粗糙表面符合拉普拉斯分布,得出了来自粗糙表面的超声背向散射声强与物体表面粗糙度,超声频率和掠射角之间的闭形解析表达式.与Boyd[1]等报道的实验结果进行了比较,其结果的近似程度在大掠射角时比文献[2]预言的更好.
The mean backscatterd sound intensity on a surface discribed by a Laplacian distribution of heights was calculated.A formula of the mean backscatterd sound intensity as a function of surface roughness,the ultrasonic frequency and the grazing angle was developed.Compared with Boyd's reported findings,the results agreed very well in a large grazing angle.
出处
《湛江师范学院学报》
2003年第6期19-21,共3页
Journal of Zhanjiang Normal College
基金
河南省科技攻关资助项目(001120119).
