Application of Ship Static Electric Field to Ship Tracking and Positioning

The ship static electric field from corrosion anticorrosion current has obvious distribution feature and contains position information. It can be used to track ships. This paper discusses the feasibility of ship tracking and positioning with the ship static electric field. Firstly, a state space model of ship motion is established, the ship static electric field is modeled by point current method, and the ship is equivalent to a point current array. Then, four Kalman filter algorithms are analyzed and compared. Finally, the applicability of the classic Kalman filters to the electric field tracking is analyzed via simulation on the basis of the Beasy data. Simulation results show that the signal of the static electric field can be used to track ship effectively, and of the classic Kalman filter algorithms, the extended Kalman filter behaves best.