Towards the Source Reconstruction with a Time-Reversal Method for Practical Applications

Abstract

Electromagnetic time-reversal (TR) method has been proposed many years ago; however, its developments and applications do not have much progress due to limited advances on relevant theories and expansions to two and three-dimensional scenarios. In this paper, we address the issue by first developing the time-reversal theory with digital signal processing techniques and extending the time-reversal method to multiple source reconstructions with different steps. Then we propose a method to reconstruct spatially clustered sources; it leads to the possibility of reconstructions of line, surface and volume sources for practical applications. Numerical example of a line source is tested for verification of the proposed method.