Friday, May 22, 2009

Free AIS message decoder.

This will decode AIVDM and AIVDO messages from the command line. I was inspired by the Joe Petrix decoder in Basic and tried to do the same thing in c++.

Source code
Sample program output:
c:\>ais-decode
Enter AIS string. (Example !AIVDM,1,1,,A,1000vV@P00Idw98ATMk00?wj0<0n div="div" f="f">
AIS string: !AIVDM,1,1,,A,15LWgHpP00qdupBATUBbk?v00H0p,0*2E
ais_string= !AIVDM,1,1,,A,15LWgHpP00qdupBATUBbk?v00H0p,0*2E

message type = 1
repeat indicator = 0
MMSI = 365555555
navagation status = 8
rate of turn = 128
speed over ground = 0
position accuracy = 1
longitude = -88.043930
latitude = 30.708603
course over ground = 2764
true heading = 511
c:\>
Update: 2012
I just added an OSX binary.
at

9 comments:

  1. jamsignal.comJuly 13, 2012 at 2:41 PM

    It has been three years and I get hits on this post every day. Is everyone looking for an AIS decoder? I may update this soon.

    ReplyDelete
  2. NarayananJune 13, 2013 at 3:04 AM

    Hi Kindly help me how to encode AIVDM Type1 Messages.

    ReplyDelete
  3. APOLLOSeptember 9, 2013 at 9:33 AM

    I really need the AIS decoder. Please update it.

    Thank you so much !
    Harry (apollo.tvt@gmail.com)

    ReplyDelete
  4. trevinatorJune 18, 2015 at 9:09 AM

    This comment has been removed by the author.

    ReplyDelete
  5. trevinatorJune 18, 2015 at 9:15 AM

    I'm sure this hasn't been updated in some time but the decoder is spitting out latitudes that are over 90 or under -90. Is this a bug or a different geocoding/latlon system?

    ReplyDelete
  6. UnknownJanuary 27, 2016 at 7:50 AM

    I really need the AIS decoder.
    Thank you !
    (1080561.ws@gmail.com)

    ReplyDelete
  7. Steffan WatkinsJune 11, 2016 at 6:32 AM

    I'm having difficulty finding a decoder that does more than one line at a time; I'm trying to get a whole bunch of AIS sentences converted to a CSV or something with lat/long that I can then import into a mapping app... so yes, people are still looking for an AIS Decoder :)

    ReplyDelete
  8. UnknownAugust 30, 2016 at 8:25 AM

    Yes, everybody is looking for an AIS decoder that simply outputs lat,lon coordinates... Well, at least we are. Thanks for providing the sources!

    Nick

    ReplyDelete
  9. Bhari ZsoltFebruary 5, 2017 at 7:25 AM

    Hi All!

    I'm don't downloading the linux binary.
    And try compiling the source, but don' build.

    Can You help me?

    My architecture: armv6 (raspberry Zero)
    and UBUNTU on intel, with normal kernel

    ReplyDelete