Development of an Electro Impedance Tomography-based Platform for Measurement of burial Depth of Cables in Subsea Sediments

Active Electric Anomaly Detection Method for Underwater Targets Based on the Orthonormal Basis Function

“…The electric anomaly detection (EAD) technology exploits the bio-inspired sensor technology named artificial electric-sense, which can distinguish the objects whose electric properties are different from those of surrounding environment [1][2][3]. It has been used in many areas, including subsea cable detection [4], archaeology prospection [5], and underwater obstacle avoidance [6]. However, the electric field decays rapidly with the propagation distance in lossy media, such as underwater medium and underground medium.…”

“…In recent years, several methods for EAD have been proposed, such as the electricsense method [7,8], the electrical impedance method [4,[9][10][11][12], and the amplitude information -frequency characteristics method [13,14]. Bazeille et al [7] proposed a purely model-based heuristic strategy, which estimates the pose and size of an ellipsoidal object based on a single straight trajectory.…”

“…In this algorithm, the uniform circular electrodes were used to detect a dipole source. Schuldei et al [4] developed an analytical model, which calculates the potential based on a static electrical field for detecting cables buried in the seabed. Cho et al [11] proposed a real-time underwater object detection method, which adopts geophysical direct-current resistivity techniques to track small submarines in the water at depths of less than 100 m under acoustically noisy conditions.…”