A pragmatic foundation for defining a rich semantic model of TRACK
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Many defense, homeland security, and commercial security objectives require continuous tracking of mobile entities. The systems that perform these functions produce information products called tracks. A track associates observations with the mobile entity and typically includes position, velocity, and other similat attributes. Military systems have sophisticated tracking and track fusion processes, but lack uniformity in syntactic and semantic content preventing effective sharing of the information. In other domains of interest, such as seagoing surface ships, dangerous cargo, and persons of interest, tracking systems are less mature and have marginal performance. It is now essential that we be able to share information across different tracking systems working in related domains. In this paper we decribe the Rich Semantic TRACK model [Hayes-Roth, 2005] as a foundation for sharing world state information across multiple systems. The model exhibits a belief and evidentiary structure tha has not been emphasized in previous track models for broad application. The approach is having a significant impact on design of emerging models, particularly the Maritime Information Exchange Model.
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