摘要
提出了一种利用时空压缩的方法,将虚拟相控阵所得到的超声阵列信号集(波列),变换为位置-时间的二维灰度图,再将其投影到时间轴上。通过研究一维灰度投影的特征,实现快速识别是否存在散射界面,并确定散射面产生的信号在时间轴上粗略位置。
A time-space compression method was proposed,which made ultrasonic array signals（wave train） received by virtual phased array transform to two-dimensional grayscale of time-location,and then project to time axis.By studying the characteristics of one-dimensional projection,the existence of scattering interface was quickly identified,and the coarse position of scattering interfaces on the timeline could also be identified.
出处
《无损检测》
2011年第2期9-12,51,共5页
Nondestructive Testing
关键词
相控阵
超声CT
散射
快速定位
Phased array
Ultrasonic CT
Scattering
Fast location
