Optimization of Degaussing Coil Currents of a Ship Using Particle Swarm Algorithm

Ships’ magnetic anomalies are one of their main problems encountering sea mines and for the cases of submarines are one of the prominent factors, which causes their fast detection. The main aim of this paper is to design a degaussing system in order to minimize magnetic anomalies of ships. To achieve this goal, first, magnetic signature of a simple ship is simulated. Then by utilizing three groups of coils which are located inside the ship’s hull, an anomaly with the same magnitude and inverse direction will be produced to minimize the total anomalies. In presented work according to the linearity of the whole system and by using particle swarm optimization, the current value of each coil will be calculated. Less complexity and higher speed of this method in comparison with direct optimizations of simulators are the most important advantages of the proposed method.