Verification of SE-signature models

A physical scale model of a submarine with active anodes and hull mounted sensors have been used in an experiment where the submarine model has passed a rangeing area in a water tank while currents are transmitted from the anodes. The measured electric potential from the submarine model is used to verify the boundary element code, used for numerical modelling. We also show how an integral representation model based on a geometrical simplification and with a much faster solver stands in comparison to the more detailed boundary element model. Such an approximation could be used within a control algorithm that regulates the current flow from the anodes. The control algorithm would get its reference signal from the hull-mounted sensors. The potential field from the submarine model is effected different depending on where in the tank the submarine model is positioned and we show how the theoretical models numerically can be compensated for that. We also show the effect the tank has on the potential field in comparison to a horizontally layered model.