Abstract—The article considers electric field tomography, which has some unique properties. A solution is proposed to the problem of detecting the useful signal when a studied object interacts with an electromagnetic field, which is due to the high measurement error associated with variation in the capacitances of the electrodes and the object with respect to the ground. Numerical simulation is used to demonstrate the feasibility of differential excitations of measurements, which can significantly reduce the error and increase the noise immunity of the system. It is shown that a system of eight electrodes is sufficient for reconstructing the image by convolution and back projection. In this case, phase measurements can be used, similarly to unipolar electric field tomography, and, in some cases, amplitude measurements.

摘要—本文考虑电场层析成像，它具有一些独特的特性。提出了一种解决方案，用于当被研究物体与电磁场相互作用时检测有用信号，这是由于与电极和物体相对于地面的电容变化相关的高测量误差。数值模拟被用来证明测量的差分激励的可行性，这可以显着减少误差并增加系统的抗扰性。示出了由八个电极组成的系统足以通过卷积和反投影来重建图像。在这种情况下，可以使用相位测量，类似于单极电场层析成像，在某些情况下，可以使用幅度测量。