Affordable Access

Publisher Website

Cooperative localization of a team of AUVs by a tetrahedral configuration

Authors
Journal
Robotics and Autonomous Systems
0921-8890
Publisher
Elsevier
Volume
62
Issue
8
Identifiers
DOI: 10.1016/j.robot.2014.03.004
Keywords
  • Underwater Navigation
  • Acoustic Communication
  • Cooperative Localization
Disciplines
  • Communication
  • Computer Science
  • Mathematics
  • Musicology
  • Physics

Abstract

Abstract This paper investigates the principles of a Cooperative Localization Algorithm for a team of at least three Autonomous Underwater Vehicles (AUVs) with respect to a surface support ship, without the use of Ultra-Short Baseline (USBL). It is assumed that each AUV is equipped with a low-cost Inertial Measurement Unit (IMU), a compass and a depth sensor, but only one of them has a high accuracy navigation sensor such as the Doppler Velocity Log (DVL). The surface boat locates itself by means of Global Positioning System (GPS). Range measurements provided by acoustic modems allow to avoid an unbounded error growth in the position estimate of each AUV. A geometric method, based on a tetrahedral configuration to obtain a deterministic fix for position, is proposed. This method allows to extend the advantages of the use of the DVL to the position estimate of other vehicles not equipped with DVL. The paper addresses also some of the problems related to the limitations of acoustic communication. The algorithm has been implemented and tested in simulations for a fleet of three AUVs and a surface support ship.

There are no comments yet on this publication. Be the first to share your thoughts.