3-D induction log modelling with integral equation method and domain decomposition pre-conditioning

The deployment of electromagnetic (EM) induction tools while drilling is one of the standard routines for assisting the geosteering decision-making process. The conductivity distribution obtained through the inversion of the EM induction log can provide important information about the geological structure around the borehole. To image the 3-D...

Computationally Efficient Conical Horn Antenna Design: A theoretical design approach

In this thesis, a computationally efficient model is proposed to determine different performance parameters of a conical horn antenna of arbitrary profile numerically over a wide range of frequencies. The model is developed using mode matching technique that solves the waveguide junction problem and an integral equation technique that solves the...

Unified matrix-vector wave equation, reciprocity and representations

The matrix-vector wave equation is a compact first-order differential equation. It was originally used for the analysis of elastodynamic plane waves in laterally invariant media. It has been extended by various authors for laterally varying media. Other authors derived a similar formalism for other wave phenomena. This paper starts with a...

Prototype of real-time monitoring system for dynamic line rating: Electrical Shielding and Communication verification

The load of the electric grid in increased by the connection of more renewable energy sources and less controlled power stations. The transmission operator has to decide where and when new overhead lines are required. However the operator can also chose to utilize existing lines more by increasing the transport capacity. This can be accomplished...

The Observable Field: On the estimation of the available power for antennas in reception

In this work the portion of the incident field that can be received by an antenna is investigated: the observable field. This field can be characterized only relying on the volume allocated to the antenna and thus independently from the specific antenna. The observable field is composed by a single spherical wave that first converges in the...

Comparison of Eigenvectors for Coupled Seismo-Electromagnetic Layered-Earth Modeling

We study the accuracy and numerical stability of three eigenvector sets for modelling the coupled poroelastic and electromagnetic layered-Earth response. We use a known eigenvector set, its flux-normalized version and a newly derived flux-normalized set. The new set is chosen such that the system is properly uncoupled when the coupling between...