Combination of DG-FDTD with a substitution model for calculating local dosimetry in a variable and highly multiscale problem

This paper proposes a method to estimate human exposure to electromagnetic field radiation in a variable and highly multiscale problem. The electromagnetic field is estimated using a combination of two methods: a rigorous time domain and multiscale method, the DG-FDTD (Dual Grid Finite Difference Time Domain) and a substitution model based on the superposition principle and the use of transfer functions. The association of these methods is applied to simulate a scenario involving an antenna placed on a vehicle and a human body model located around it. The purpose is to assess the electromagnetic fields in the left eye of the human body model. It is shown that this combination permits to analyse many different positions in a fast and accurate way.