Advanced concepts for satellite reception of AIS messages (3rd Toulouse Space Show 2012)

David Bonacci (1, 2) , Jean-Pierre Millerioux (3) , Raoul Prévost (1, 4, 2) , Julia Lemaitre (3) , Martial Coulon (1, 4) , Jean-Yves Tourneret (1, 4)

1 IRIT-SC - Signal et Communications
2 TéSA - Télécommunications Spatiales et Aéronautiques - Telecommunications for Space ant Aeronautics
3 CNES - Centre National d'Études Spatiales [Toulouse]
4 Toulouse INP - Institut National Polytechnique (Toulouse)

This paper addresses the problem of demodulating messages received by a low-orbit satellite (altitude between 700 and 800 km) and transmitted by vessels using the Automatic Identification System (AIS). AIS is a Self-Organized Time Division Multiple Access (SO-TDMA) system, in which vessels periodically transmit information (mainly including MMSI – identification code of the ship– and its GPS position). The main application of the actual AIS system is collision avoidance between ships but a satellite reception would lead to a global supervision of maritime traffic, which could be of great interest for a lot of applications (military but also civil applications as fleet surveillance and monitoring).

Mots clés: demodulation; trellis; interference mitigation; beamforming

Domaines: Traitement du signal et de l'image [eess.SP]

David Bonacci, Jean-Pierre Millerioux, Raoul Prévost, Julia Lemaitre, Martial Coulon, et al.. Advanced concepts for satellite reception of AIS messages (3rd Toulouse Space Show 2012). 3rd Toulouse Space Show 2012, Jun 2012, Toulouse, France. pp.1-4. ⟨hal-03609216⟩