Re: ✘AIS regressions

[Lucien Van Elsen]

The additional fields are described at https://gpsd.gitlab.io/gpsd/AIVDM.html#_u_s_coast_guard_extended_aivdm - basically, deprecated and undocumented, but seen often enough in the wild.

On Mon, Nov 28, 2022 at 6:33 PM Gary E. Miller <gem@rellim.com> wrote:

Yo All!

Any AIS people got their earss on?

> The middle message went away.  Looking ar the source log for the
> missing message:
>
> !AIVDM,2,1,6,A,8>qc9wiKf>d=Cq5r0mdew:?DLq>1LmhHrsqmBCKnJ50,0*30 
> !AIVDM,2,2,6,A,3OLc=UCRp,0*4A,b003660465

Turns out this is not uncommon in the AIS regressions:

Also from test/sample.aivdm:

!AIVDM,1,1,,B,:6TMCD1GOS60,0*5B,s36310,d-081,T59.01777335

!AIVDM,1,1,,B,;4R33:1uUK2F`q?mOt@@GoQ00000,0*5D,s28089,d-103,T39.44353985,x147521,r08TPHI1,1242958962

!AIVDM,1,1,,B,?h3Ovn1GP<K0<P@59a0,2*04,d-077,S1832,t004248.00,T48.85520485,r07RPAL1,1272415370

!AIVDM,1,1,,B,?h3Ovn1GP<K0<P@59a0,2*04,d-077,S1832,t004248.00,T48.85520485,r07RPAL1,1272415370

!AIVDM,1,1,1,A,A;wUJKU>io;WlWuwH`W1PpnuN<isf;5iHtOM1S6q?vsvNrNGOqLcr5mfD6t,2*51,d-127,S1378,t024436.00,T36.76385108,r09SCHA1,1272422678

Guess I gotta RTFM...


RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
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