Self-reciprocity calibration for spherical transducers based on acoustic reflection from the inside wall of a spherical shell

作     者：SHOU Wende HUANG Yongjun YANG Liuqing CHEN Yi JIA Longyang ZHANG Wei HU Bing SHOU Wende;HUANG Yongjun;YANG Liuqing;CHEN Yi;JIA Longyang;ZHANG Wei;HU Bing

作者机构：Shanghai Institute of Ultrasound in MedicineShanghai 200233 Shanghai Jiao Tong University affiliated Sixth People's HospitalShanghai 200233 Hangzhou Applied Acoustics Research InstituteHangzhou 310023 

出 版 物：《Chinese Journal of Acoustics》 (声学学报（英文版）)

年 卷 期：2022年第41卷第3期

页      面：250-261页

核心收录：

学科分类：082403[工学-水声工程] 08[工学] 0824[工学-船舶与海洋工程] 

基　　金：supported by the Shanghai Key Clinical Specialty(shslczdzk03203) Shanghai Clinical Key Discipline(02.LY01.03.1919-1921) 

主　　题：calibration spherical radius 

摘      要：B ased on the emission of pulsed spherical acoustic waves from a spherical transducer and their reflection from the inside wall of a concentric spherical shell,the electromechanical reciprocity theorem is applied to derive a reciprocity coefficient for the calibration of a spherical transducer in a spherical acoustic ***,a self-reciprocity calibration method using a closed spherical shell reflector is proposed to obtain the five fundamental electroacoustic parameters of the spherical transducer from a single ***,a conversion factor is given for converting the voltage sensitivity obtained by the current method to the standard sensitivity defined in plane wave *** determine this conversion factor,a method is developed for measuring the scattering coefficient of the *** of a 10-mm-radius spherical transducer was performed in the frequency range 25 kHz to 63 *** results showed that the standard uncertainty of the measured voltage sensitivity was up-bounded by 0.9 dB.