On the performance analysis of a satellite-based AIS system

This paper presents the performance analysis and system trade-offs of a satellite-based AIS (Automatic Identification System) system. Such a system represents a global monitoring extension of the current terrestrial AIS for ship identification and localization and is being currently investigated by several commercial and governmental entities. Operation of a constellation of LEO satellites targeting AIS detection is currently foreseen to be started within the next few years. In this paper, the feasibility of the concept is proven by deriving the probability of ship detection over key geographical areas like the North Atlantic Ocean. Key system and sub-system parameters and components are analyzed including the satellite orbit, the satellite antenna design and the on-board receiver. Their impact to the overall system performance is presented.