采用VC++与Matlab混合编程的方式，研制了一套超声相控阵成像仿真系统。仿真系统由三大模块组成，探头模块完成各探头参数的设置，并可分析显示其声场声压分布及其指向性特性等；缺陷模块模拟缺陷及并设定缺陷成像方式；仿真成像模块完成探头发射超声波，超声波在工件中传播并与缺陷相互作用产生回波信号，回波信号被探头接收经包络提取、对数压缩、DSC变换等一系列超声信号处理过程，最终以图像形式显示。

Using mixed programming of VC++ and Matlab, a simulation system of ultrasonic phased array imaging was developed. Simulation system composed of three modules, probe module set the probe parameters and can be used to analyze its sound pressure and directivity. Defect module simulates defects and choose defects imaging method. Simulation imaging module completes ultrasonic waves transmitted by the probe, propagating in the workpiece and generating echo signals through interaction with defects, then echo signals received by the probe, finally after series of signal processing, including envelope extraction, logarithmic compression, DSC transform and so on, showed graphically.