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| From: | Jean-Michel FRIEDT |
| Subject: | Re: [Discuss-gnuradio] How to use USRP to detect and collect weak satellite signals |
| Date: | Wed, 04 Sep 2013 15:00:08 +0200 |
| User-agent: | Internet Messaging Program (IMP) H3 (4.3.7) |
apparently someone else was at OHM ... i had not seen the trick of squaring the GPS signal to get rid of the phase modulation and hence the spread spectrum to only recover the doppler shift elsewhere: looks like a great trick to validate the reception of a GPS signal even below thermal noise levels.
What is the difference between the receiver tech in something like a CSR chip vs USRP?On Wed, Sep 4, 2013 at 9:25 PM, Ralph A. Schmid, dk5ras <address@hidden>wrote:> I've actually seen it without de-spreading during a presentation recently. Of > course it had been received with a 25 m dish or so :) Yep, brute forced it should be possible :-) Not really the same like with UMTS or LTE... Ralph. _______________________________________________ Discuss-gnuradio mailing list address@hidden https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
--JM Friedt, FEMTO-ST Time & Frequency/SENSeOR, 32 av. observatoire, 25044 Besancon, France
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