title: Reliable underwater dipole source characterization in 3D space by an optimally designed artificial lateral line system.
abstract: Inspired by the lateral line of aquatic vertebrates, an artificial lateral line (ALL) system can localize and track an underwater moving object by analyzing the ambient flow caused by its motion. There are several studies on object detection, localization and tracking by ALL systems, but only a few have investigated the optimal design of the ALL system, the one that on average provides the highest characterization accuracy. Design optimization is particularly important because the uncertainties in the employed flow model and in sensor measurements deteriorate the reliability of sensing. This study investigates the optimal design of the ALL system in three-dimensional (3D) space for dipole source characterization. It highlights some challenges specific to the 3D setting and demonstrates the shortcomings of the designs in which all sensors and their sensing directions are in the same plane. As an alternative, it proposes two design concepts, called 'Offset Strategy' and 'Angle Strategy' to overcome these shortcomings. It investigates potentials of having a swarm of cooperative ALLs as well. It performs design optimization in the presence of sensor and model uncertainties and analyzes the trade-off between the number of sensors and characterization accuracy. The obtained solutions are analyzed to reveal their strategies in solving the problem efficiently. The dependency of the optimized solutions on the uncertainties is also demonstrated.
authors.affiliation: Department of Mechanical Engineering, Michigan State University, East Lansing, MI, United States of America.
authors.forename: Ali
authors.initials: A
authors.lastname: Ahrari
authors.forename: Hong
authors.initials: H
authors.lastname: Lei
authors.forename: Montassar Aidi
authors.initials: MA
authors.lastname: Sharif
authors.forename: Kalyanmoy
authors.initials: K
authors.lastname: Deb
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Tan
mesh_terms: D000818:Animals; D040761:Biomimetic Materials; D032701:Biomimetics; D004867:Equipment Design / Q000592:standards*; D005399:Fishes; D057446:Hydrodynamics; D007101:Immersion; D053403:Lateral Line System; D008465:Mechanoreceptors; D015203:Reproducibility of Results; D012212:Rheology; D014867:Water
chemical_list: D014867:Water