Chen X, Schwarz K Q, Parker K J
Rochester Center for Biomedical Ultrasound, University of Rochester, New York 14627.
J Acoust Soc Am. 1994 Jun;95(6):3049-54. doi: 10.1121/1.409996.
An approximate solution for the acoustic coupling factor (the diffraction correction function) from a focused transducer to a flat plate and back to the transducer is provided. This function is useful for system calibrations where a pulse-echo system or transmit-receive system is used. Numerical solutions are provided for the important case where the flat plate is placed near the focal plane of the transducer. The solution for a flat disk transducer is obtained as a limiting case. Experimental evidence for a focused transducer is provided.
给出了从聚焦换能器到平板再回到换能器的声耦合因子（衍射校正函数）的近似解。该函数对于使用脉冲回波系统或发射 - 接收系统的系统校准很有用。针对平板放置在换能器焦平面附近的重要情况提供了数值解。作为极限情况得到了平盘换能器的解。还提供了聚焦换能器的实验证据。
