jze / ais-decoder

A FreeAIS fork for its AIS message decoder

AIS message decoder

This Java library can be used to decode AIS messages (e.g. !AIVDM,1,1,,B,139O<l0P000dtRPO6lb@0?wb061l,0*35)

It is just a selective fork of the FreeAIS codebase to include just the AIS message decoding part.

Usage

Include the library in you Maven project:

<depencency>
   <groupId>de.zedlitz</groupId>
   <artifactId>ais-decoder</artifactId>
   <version>0.9.5</version>
</depencency>

Right now the library is not in Maven's central repository. Therefore, you have to clone this project locally and run mvn install on it once.

In the simplest case, a message can be decoded with one line of Java code:

IAISMessage message = new AISParser().parse("!AIVDM,1,1,,B,139O<l0P000dtRPO6lb@0?wb061l,0*35");

However, longer AIS messages will be split in two or more lines. In these cases the parse method will return null unless the last line of the message has been decoded.