Electromagnetic Imaging of Two-Dimensional Geometries by Multipulse Interference Using the Inverse FDTD Method

[摘要] The size, shape, and location of unknown objects in the ground and in the body can be estimated by anelectromagnetic imaging technique. An imaging approach to clear detection of two-dimensional geometries isproposed in this paper. Based on the inverse finite-difference time-domain (FDTD) method, a phase interferencetechnique using multidirectional pulses is employed. The advantage of the proposed method is that it can clearlyreconstruct the geometry in a simple calculation. Sample imaging results are demonstrated. The analysis of theFDTD results shows that the detectable object size is limited by the incident wavelength and the measurementspacing and illustrates the detectability of multiple objects.

[学科分类] 光谱学