Research of Ship's Stealth Methods in Static Electric Field

Abstract

In order to decrease the ship's static electric field as much as possible, the ship potential and static electric field are compared under different conditions, natural corrosion, sacrificial anodes protection, normal and advanced impressed-current cathodic protection and impressed-current compensation based on boundary element calculating software. Then a scaled ship model experiment was conducted for the validation of numerical results. The results show that the method based on impressed-current compensation can most effectively decrease the ship's static electric field compared with other methods, but the whole ship areas are not under cathodic protection.

Ship Target Tracking Using Underwater Electric Field

“…According to Yu et al [21], the distance between the ship's two equivalent point-electrodes is 1/3 ∼ 1/2 of the ship length. If the distance between these two point-electrodes is set to a certain length within this range, the equivalent electric dipole moment can be estimated accurately by only solving the current values of these two point-electrodes.…”