基于单电极激励的ART迭代算法电阻层析成像研究

摘要

电阻层析成像(ERT)图像重建技术是一个不适定的逆问题求解过程,其中单电极激励是目前ERT测量中获得数据比较多的一种测量方式.论文在此测量基础上提出一种基于灵敏系数原理与ART迭代算法相结合的图像重建算法,推导出了求解ERT反问题的计算步骤.实验结果表明,该算法能够有效地标出物体的位置,与FPB算法相比较,对于简单的流型,该算法有成像质量高的优点,为ERT中单电极激励的研究提供了一种新的方法.%Electrical resistance tomography(ERT) image reconstruction is a solution of an ill - posed inverse problem. ERT based on the single drive electrode method can afford more data than other methods. A new hybrid ERT image reconstruction algorithm is proposed based on sensitive coefficient theory and ART iteration method and the calculation steps of the algorithm are deduced for solving ERT inverse problem. The experiment result shows that for a simple flow pattern, the object position can be marked,and this new algorithm provides higher quality images compared with FBP algorithm. This new algorithm offers a new way in the ERT research based on the single drive electrode method.