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Re: [Discuss-gnuradio] gr-ais not decoding AIS data

From: Nick Foster
Subject: Re: [Discuss-gnuradio] gr-ais not decoding AIS data
Date: Tue, 26 Aug 2014 15:48:31 -0700

Strange. You have the correct settings. I'll look into that now.

I've been operating gr-ais from a separate branch lately (the "msk" branch), but it depends on some blocks which I haven't gotten permission to contribute back upstream yet. Hopefully by GRCon I'll have permission and can move them into master; the MSK sync blocks help a lot with AIS performance.


On Tue, Aug 26, 2014 at 3:35 PM, Josh Hattery <address@hidden> wrote:

I've just started poking around with gr-ais on a new Ubuntu 14.04 install. I grabbed it from https://github.com/bistromath/gr-ais.git and it compiled fine, but when I feed it "ais.dat" from http://www.nerdnetworks.org/~bistromath/ais.dat.tar.gz it doesn't output any AIS data:

:~$ ais_rx -s Downloads/ais.dat -r 256e3 -g 60
Using file source Downloads/ais.dat
Rate is 256000
Using Volk machine: sse4_2_64_orc

The data file looks good as the FFT and Waterfall plots in GRC clearly show the recorded AIS data. Is this an issue with the transition to gnuradio 3.7?


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