CAJ | 학술논문

针对超声散斑实验方法中误差大、过程繁琐等缺点，提出了采用计算机模拟产生超声散斑场的方法。利用模拟产生的高斯相关随机表面，模拟产生了这类表面在夫琅禾费面上的散斑场。为了和实验产生的散斑场进行对比，建立了超声散斑场接收的实验系统，取与计算模拟相同的参数，获得了实验散斑场。通过对比发现：计算机模拟产生的散斑场强度更大、散斑颗粒更多、对比度更好，更便于分析和研究使用。
침대초성산반실험방법중오차대、과정번쇄등결점，제출료채용계산궤모의산생초성산반장적방법。이용모의산생적고사상관수궤표면，모의산생료저류표면재부랑화비면상적산반장。위료화실험산생적산반장진행대비，건립료초성산반장접수적실험계통，취여계산모의상동적삼수，획득료실험산반장。통과대비발현：계산궤모의산생적산반장강도경대、산반과립경다、대비도경호，경편우분석화연구사용。
Ultrasonic speckle experimental methods have large measuring errors and operation processes are com-plicated.For this reason, the method for the computer simulated generation of ultrasonic speckle field is pro-posed.Using the Gaussian correlation random surfaces that are generated by simulation , the simulation of the speckle field produced by this kind of surfaces on the Fraunhofer plane is performed .To compare the difference between speckle field from experiment and speckle field by the simulation , the ultrasonic speckle field receiving experimental system is established and the experimental speckle field is obtained with the same parameters in the simulation .By contrast , the ultrasonic speckle field that is generated by the simulation has higher intensity , more speckles, and it is more convenient for analysis and research .