Ship Target Tracking Using Underwater Electric Field

Abstract

Underwater electric field is an important source of exposure for warship targets, so we try to track the ship's movement by measuring its underwater electric field in this paper. Considering the nonlinear distribution characteristics of underwater electric field, the unscented particle filter method is applied for tracking. First, the equivalent electric field model based on point-electrodes methods is studied. Second, the equivalent electric field model of a scaled ship is used as the electric field source, and the source's movement is tracked by measuring the three components of the underwater electric field induced by the source. To meet the requirements of mine applications, only one measuring node is used in the tracking process. The numerical simulation result shows that the target can be tracked stably within 200 meters of the measuring node. Finally, a sea trail experiment is carried out to examine the effectiveness of this method. In this experiment, the electric field source is composed by two graphite electrodes, and only the horizontal components of underwater electric field are measured. The results show that the tracking performance is good within 150 m of the measuring node.

Ship Shaft-Rate Electric Field Signal Denoising Method Based on VMD-MSS

“…However, advancements in vibration and noise reduction technologies for ships and underwater vehicles, along with the escalating acoustic noise sources in the marine environment, have led to a continuous increase in noise levels. Relying solely on acoustic detection for target identification, localization, and detection has become insufficient to meet practical needs, necessitating the integration of non-acoustic detection [1]. In the marine environment, electromagnetic waves experience rapid attenuation in seawater, making long-distance propagation challenging.…”

Mixed Electric Field of Multi-Shaft Ship Based on Oxygen Mass Transfer Process under Turbulent Conditions

“…With the research on the magnetic field and electric field of ships, the multi-sensor fusion detection and positioning technology for simultaneously detecting the magnetic field, electric field, and sound field has been gradually applied. Among them, the ship's electric field signal, especially the shaft-rate electric field signal, is distinctive in the ocean, and transmits over long distances, so that it has been widely applied in the remote detection of marine targets [1]. Therefore, it is of great significance to study the variation regularity of the ship's electric field under sailing conditions.…”

Tracking Model of Joint Electromagnetic Signals of Naval Targets Based on Small-Scale Platform

“…The above-mentioned analytical method to achieve target tracking has the shortage of large computational volume, so the Kalman filter algorithm is more widely used in filtering methods to track the electric field target. Yu et al [7] successfully applied the extended Kalman filter algorithm to electrostatic field tracking of ships. Donati and Le Cadre [8] used the underwater electric field information and achieved the estimation of target position and heading angle and other states based on GLRT and Monte Carlo criterion.…”