High signal-to-noise ratio ultrasonic testing system using chirp pulse compression

被引：0
|
作者：
Iizuka, Y [1 ]
机构：
[1] NKK Corp, Appl Technol Res Ctr, Kawasaki Ku, Kawasaki, Kanagawa 210, Japan
来源：
INSIGHT | 1998年 / 40卷 / 04期
关键词：
D O I：
暂无
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A new ultrasonic testing system using chirp pulse compression is described in this article. An improvement of the Signal-to-Noise Ratio (SNR) of more than 20 dB can be achieved with this system compared to conventional ultrasonic testing systems using a spike pulse. The special feature of the system is a digital pulse compression with a finite impulse response digital filter to compress the chirp pulse accurately and flexibly. The high SNR of the system provides more reliable automatic testing and allows the use of low-sensitivity transducers.
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页码：282 / 285
页数：4
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