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This package supports the parsing of AIS messages in Java. AIS, the Automatic Identification System, is a system aiming at improving maritime safety by exchanging messages between ships, other vehicles in particular aircraft involved in search-and-rescue (SAR), and (fixed) base stations. To be precise, this package support the ITU-R M.1371-4 AIS standard. See our extensive javadoc and in particular the class AISParser for more information on how to use this package. The parser was used in the Poseidon project, and is improved in the Metis project to better handle uncertain information. Both projects were led by the Embedded Systems Institute. In both projects Thales Nederlands was the carrying industrial partner, and multiple Dutch universities participated.

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package nl.esi.metis.aisparser;

/** This abstract class represents the communication state as returned by {@link AISMessagePositionReport#getCommunicationState()}.
 * The real information is handled by the subclasses. 
 * 
 * @author Pierre America
 * @author Pierre van de Laar
 *
 */
public abstract class CommunicationState {
	/** This string is used by this class (and its subclasses) to separate the different fields in generated strings. */
	public static final char SEPARATOR = '|';
}