This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/osmocom-sdr@lists.osmocom.org/.
Nick Foster nick at ettus.comLooking forward to seeing it. Would be very nice to have ACARS data alongside ADS-B. --n On Mon, Aug 6, 2012 at 3:05 PM, <friedtj at free.fr> wrote: > not sure what "I've been doing gr-air-modes development in anticipation of > our ..." means, > but since ACARS was being discussed as an addition to gr-air-modes, please > let me announce that I am > about to complete an ACARS-decoding block which was quite well tested on > the rtl-sdr. > > JM > > ----- Mail original ----- > De: "Nick Foster" <nick at ettus.com> > À: "Christian Gagneraud" <chris at techworks.ie> > Cc: osmocom-sdr at lists.osmocom.org > Envoyé: Dimanche 5 Août 2012 17:13:14 > Objet: Re: gr-ais with osmosdr > > > On Sun, Aug 5, 2012 at 11:45 AM, Christian Gagneraud < chris at techworks.ie> wrote: > > > Hi there, > > I saw a message in the July archive (I wasn't subscribed yet at that date) > about updating gr-ais with osmosdr support. > I was working on the same thing recently, so i decided to publish my fixes > on top of Antoine's one. > The result can be found here: > https://github.com/chgans/gr- ais > > I got it working with both an FCD and an RTL: > ais_rx.py --rate 96e3 --gain 30 --error -17 -d -D fcd=0 > ais_rx.py --rate 1024e3 --gain 30 --error -110 -d -D rtl=0 > > > > Thanks for doing this. I haven't been looking at gr-ais lately as I've > been doing gr-air-modes development in anticipation of our DefCon talk. Now > that that's over, I'll have some time to integrate these changes and > hopefully modernize a few things in gr-ais which I've been putting off. > > > > Strangely passing freq_err=XX parameter to the source (using -D), doesn't > work, the use of --error is thus needed (which will do a set_freq_corr()). > > Antoine, if you want sample file, just let me know. > > Nick, are you willing to integrate these changing back in gr-ais, Apart > from the added automatic decimation filter, the changes are not intrusive > at all. > > > > Yep, I'll pull it back in. I'm also going to need your help vetting the > changes against the FCD, as I don't have one. I do have an RTL dongle I can > do some testing with. Have you had much success with AIS on RTL? > > > --n > > > > > > The default settings for UHD are 256Khz sampling with decimation filter 4, > with this change, the decimation is one when using FCD (96KHz fixed > frequency) and 16 for RTL when used at 1.024MHz (this was the minimum > working frequency for me). > Or maybe would you prefer to allow the user to set it manually, and use > this technique as a fall back only. > > Please let me know what you guys think. > > Thx, > Chris > > -- > Christian Gagneraud, > Embedded systems engineer. > Techworks Marine > 1 Harbour road > Dun Laoghaire > Co. Dublin > Ireland > Tel: + 353 (0) 1 236 5990 > Web: http://www.techworks.ie/ > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/osmocom-sdr/attachments/20120806/ea2d2d1a/attachment.htm>