摘要
讨论换能器带宽对声脉冲响应谱特征的影响,实验结果表明,窄带频谱出现旁瓣;宽带频谱低端下降,结果与理论分析一致。
The effect of the bandwidth of transducer on the ultrasound spectra feature of soft tissues is discussed. The sidelobes are present in the spectra when the narrow-band transducer is used in the experiments. When the wide-band transducers is used, however, the low-frequency components of the spectra decreased significantly. The theoretical analysis is consistent with the results of the experiments.
出处
《陕西师大学报（自然科学版）》
CSCD
1991年第2期26-28,共3页
Journal of Shaanxi Normal University(Natural Science Edition)
基金
国家自然科学基金
