15th Triennial World Congress of the International Federation of Automatic Control
  Barcelona, 21–26 July 2002 
A NONLINEAR VISION BASED TRACKING SYSTEM FOR COORDINATED CONTROL OF MARINE VEHICLES
P. Oliveira* A. Pascoal* I. Kaminer**
* IST/DEEC and Institute for Systems and Robotics,
Av. Rovisco Pais, 1049-001 Lisboa, Portugal
** Naval Postgraduate School, Monterey, CA 93943, USA

A nonlinear vision based tracking system is developed to provide estimates of the position and velocity of an Autonomous Underwater Vehicle (AUV) relative to an Autonomous Surface Craft (ASC). Nonlinear estimator design builds on the theory of linear parametrically varying (LPV) systems. The theoretical framework adopted provides a powerful tool for estimator regional stability and performance analysis. Simulations illustrate the performance of the tracker developed.
Keywords: Nonlinear Filters, LPVs, Autonomous Vehicles, Vision Systems
Session slot T-Tu-M05: Underwater Vehicles/Area code 8c : Marine Systems