摘要
论述了有关全数字化B超中超声波的辐射声场及相应的计算方法 ,通过引入指向性函数分别描述了连续波和脉冲波的声场 .着重论述了在实际中应用较多的脉冲波声场的计算 .通过分析表明 ,脉冲持续时间愈长 ,脉冲波声场就愈接近于连续波声场 .
This paper describes the ultrasonic radiation field and the calculating method in the digitized B mode ultrasonic diagnostic system. The sound field of the Continuous Wave and the Impulsive Wave is described by the directivity function. In this paper, the calculation of the sound field of the Impulsive Wave which is more often used in practice is emphasized.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2000年第4期419-423,共5页
Journal of Xidian University
关键词
超声波声场
指向性函数
B超
sound field of ultrasonic wave
directivity function
FFT
