Bulk acoustic wave Barker code sequence and the application in ultrasonic NDT

被引：2
|
作者：
BAI Yuhai and PEI Liwei (Institute of Acoustics
机构：
来源：
ChineseJournalofAcoustics | 1994年 / 03期
关键词：
Barker code; Correlation; Ultrasonic NDT;
D O I：
10.15949/j.cnki.0217-9776.1994.03.004
中图分类号：
O426 [超声学];
学科分类号：
070206 ; 082403 ;
摘要：
A simple and convcnient method to gain bulk acoustic wave Barker code sequence is presented and the results of the correlation are givcn. The transducer response to a unit electric pulse is used as a unit code constituting the Barker code sequence of acoustic signal. The phase precision of the code sequence as well as the fairly ideal response function are guaranteed by the high accuraey of a DATA-2020 Arbitrary Waveform Synthesizer and a DATA-6000 Universal Wavcform Analyzer. Some deviations between the experiments and thcory are caused by the transient response and timc delay characteristics of the ultrasonic tansducer.
引用
收藏
页码：219 / 223
页数：5
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