4.7 Article

Anomaly Detection in Maritime AIS Tracks: A Review of Recent Approaches

Journal

Publisher

MDPI
DOI: 10.3390/jmse10010112

Keywords

automatic identification system; AIS; anomaly detection; maritime safety; maritime security; maritime surveillance

Funding

  1. German Federal Ministry of Economic Affairs and Climate Action (BMWK) within the Maritime Research Programme [03SX543B]

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The automatic identification system (AIS) plays a crucial role in enhancing maritime safety by transmitting important information about vessels and enabling collision avoidance. It has been widely used in various applications and has the potential to greatly support vessel traffic services and collision risk assessment. Anomalies in AIS tracks can indicate safety and security-related events. With the increasing availability of AIS data, there is a growing need for automatic detection of anomalous AIS data.
The automatic identification system (AIS) was introduced in the maritime domain to increase the safety of sea traffic. AIS messages are transmitted as broadcasts to nearby ships and contain, among others, information about the identification, position, speed, and course of the sending vessels. AIS can thus serve as a tool to avoid collisions and increase onboard situational awareness. In recent years, AIS has been utilized in more and more applications since it enables worldwide surveillance of virtually any larger vessel and has the potential to greatly support vessel traffic services and collision risk assessment. Anomalies in AIS tracks can indicate events that are relevant in terms of safety and also security. With a plethora of accessible AIS data nowadays, there is a growing need for the automatic detection of anomalous AIS data. In this paper, we survey 44 research articles on anomaly detection of maritime AIS tracks. We identify the tackled AIS anomaly types, assess their potential use cases, and closely examine the landscape of recent AIS anomaly research as well as their limitations.

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