Forward Modeling Of Electromagnetic Induction Based On Finite Difference Frequency Domain Methods Using Variations Of Electrical Conductivity In Agricultural Area Ima Rahmadanti and Harry Mahardika
Fakultas Matematika dan Ilmu Pengetahuan Alam
Institut Teknologi Bandung
Abstract
This study aims to model secondary magnetic field data from the distribution of electrical conductivity values from actual agricultural field measurements. This is achieved by solving the frequency domain (Helmholtz) diffusive wave equation for magnetic field component using the Finite Difference Frequency Domain (FDFD) method. The modeling begins with the derivation of Maxwell^s equation in the frequency domain to obtain the diffusive wave equation that will be used. The processing carried out in the modeling cannot be separated from the boundary conditions to find a solution to the wave equation. The explanation of the field measurements that have been carried out makes the modeling focused on solving the wave equation for the magnetic field. Therefore, this study will produce magnetic field value data, where in actual field operation the data is directly processed into electrical conductivity data. The resulting magnetic field value is considered as the primary magnetic field which is then used to determine the secondary magnetic field.
