Underwater Scan Matching using a Mechanical Scanned Imaging Sonar

Authors Antoni Burguera Burguera | Yolanda González Cid | Gabriel Oliver Codina
In IFAC Symposium on Intelligent Autonomous Vehicles (IAV), Lecce (Italy), 2010.
ISBN 978-3-902661-87-6


Underwater environments are extremely challenging to perform localization. Autonomous Underwater Vehicles (AUV) are usually endowed with acoustic devices such as a Mechanically Scanned Imaging Sonar (MSIS). This sensor scans the environment by emitting ultrasonic pulses and it provides echo intensity profiles of the scanned area. Our goal is to provide self-localization capabilities to an AUV endowed with a MSIS. To this end, this paper proposes a scan matching strategy to estimate the robot motion. This strategy extracts range information from the sensor data, deals with the large scan times and performs a probabilistic data association. The proposal is tested with real data obtained during a trip in a marina environment, and the results show the benefits of our proposal by comparing it to other well known approaches.

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