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Accession Number
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ADA559938
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Title
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Maritime Threat Detection Using Probabilistic Graphical Models.
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Publication Date
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2012
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Media Count
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7p
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Personal Author
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B. Auslander D. W. Aha K. M. Gupta
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Abstract
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Maritime threat detection is a challenging problem because maritime environments can involve a complex combination of concurrent vessel activities, and only a small fraction of these may be irregular, suspicious, or threatening. Previous work on this task has been limited to analyses of single vessels using simple rule-based models that alert watchstanders when a proximity threshold is breached. We claim that Probabilistic Graphical Models (PGMs) can be used to more effectively model complex maritime situations. In this paper, we study the performance of PGMs for detecting (small boat) maritime attacks. We describe three types of PGMs that vary in their representational expressiveness and evaluate them on a threat recognition task using track data obtained from force protection naval exercises involving unmanned sea surface vehicles. We found that the best-performing PGMs can outperform the deployed rule-based approach on these tasks though some PGMs require substantial engineering and are computationally expensive.
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Keywords
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Detection
Marine transportation
Military exercises
Military vehicles
Ocean environments
Threats
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Source Agency
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Non Paid ADAS
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NTIS Subject Category
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47A - Marine Engineering
63F - Optical Detection
72E - Operations Research
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Corporate Author
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Naval Research Lab., Washington, DC.
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Document Type
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Technical report
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Title Note
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N/A
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NTIS Issue Number
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1220
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Contract Number
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N/A
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