一种修正的电阻层析成像Landweber迭代算法  

A Modified Landweber Algorithm for Electrical Resistance Tomography

作　　者：张立峰[1] 王化祥[2] 

机构地区：[1]华北电力大学自动化系,河北保定071003 [2]天津大学电气与自动化工程学院,天津300072

出　　处：《计量学报》2016年第3期271-274,共4页Acta Metrologica Sinica

基　　金：国家自然科学基金(51306058);中央高校基本科研业务费专项资助(2014MS142)

摘　　要：研究了灵敏度矩阵更新的Landweber迭代图像重建算法，以期提高重建图像精度。灵敏度矩阵更新时的初始图像由Landweber迭代法获得，对不同迭代次数的灵敏度矩阵更新间隔进行了比较，并且对灵敏度矩阵的更新次数进行了分析，仿真及实验结果表明，该方法能有效提高图像重建精度。Landweber iterative algorithm with updated sensitivity matrix is studied to improve the quality of reconstructed images. The initial image for sensitivity matrix update was obtained by Landweber iterative algorithm, and the results of different sensitivity matrix update intervals are compared. The times of sensitivity matrix updating are also analyzed. Experimental and simulation results showed that reconstructed images with higher accuracy can be obtained.

关 键 词：计量学 电阻层析成像 图像重建算法 Landweber迭代 多相流参数测量 

分 类 号：TB937[一般工业技术—计量学]