【作者】 吴新杰； 许超； 徐明达； 鞠冲；

【Author】 Wu Xin-jie;Xu Chao;Xu Ming-da;Ju Chong;College of physics,Liaoning University;

【机构】 辽宁大学物理学院；

【摘要】 灵敏度场是EMT系统图像重建的先验信息,由于其受非线性问题困扰,选择合适的传感器结构参数对于改善灵敏度场至关重要。根据灵敏度场的场域强度与离散程度,选取灵敏度场的均值、方差作为传感器优化目标并建立其目标函数,依托COMSOL5.4的内置功能模块采用BOBYQA算法实现传感器结构参数优化设计。通过实验仿真及比较分析,证明了该方法的有效性,从而为后续图像重建工作提供了更好的实验数据。更多还原

【Abstract】 The sensitivity field is the prior information of image reconstruction in EMT system.Because of its nonlinear problem,it is very important to select the appropriate sensor plate size to improve the sensitivity field.According to the discrete degree of sensitivity field,the target mean value,variance and objective functionof sensor optimization are established.Through the built-in function module of COMSOL 5.4,BOBYQA algorithm is used to realize the optimal design of sensor plate.Finally,through the experimental simulation and analysis,the effectiveness of the method is proved,which provides better experimental data for the subsequent image reconstruction work.更多还原