Source Reconstruction with the Electromagnetic Space Kurtosis and Time
Kurtosis in the Time-Reversal Technique
- Xiaoyao Feng ,
- ZHIZHANG CHEN
Abstract
In our previous study, a concept of electromagnetic kurtosis for
time-reversal source reconstruction was presented. From a two-step
process, the electromagnetic kurtosis can first identify the excitation
time instants then localize the sources locations with time-reversal
technique. In this paper, we extend the concept of the electromagnetic
kurtosis from two different perspectives. The proposed space kurtosis
and time kurtosis in the electromagnetic time-reversal process can
directly reconstruct excitation time instants and spatial locations of
sources respectively. The newly proposed time kurtosis takes the
advantages of time-domain computational electromagnetics methods. Its
algorithm with the threshold technique simplifies the procedures of
multiple sources localization. Numerical experiments are conducted to
verify the effectiveness of the presented algorithm.