[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] Tuning in VLF with a sound card
From: |
address@hidden |
Subject: |
Re: [Discuss-gnuradio] Tuning in VLF with a sound card |
Date: |
Thu, 02 May 2019 20:29:39 +0000 |
https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2017RS006420
or
http://jmfriedt.free.fr/agu_dcf77.pdf
We are currently working on simultaneously decoding (e)LORAN/MSF, TDF & DCF77
v.s GPS
with a sound card.
JM
--
JM Friedt, FEMTO-ST Time & Frequency/SENSeOR, 26 rue de l'Epitaphe,
25000 Besancon, France
May 2, 2019 10:24 PM, "Brad Hein" <address@hidden> wrote:
> I took a Raspberry Pi and attached a 48KHz USB sound card, with a big
> magnetic loop antenna fed
> into the mic. A little cheesy? yes! But I'd like to try and see if I can
> receive VLF. It's in a
> remote location with little to no interference so I'm thinking my chances
> should be good. The
> challenge I'm facing is that I need to write the SDR logic to "tune"
> throughout the 0-24KHz tuning
> range.
>
> My question is, being that a sound card source presents samples in float and
> not the usual complex
> data type, can I still apply the same SDR logic that we use for SSB/FM/AM
> demodulation such as
> those presented in the Gnuradio tutorials (eg.
> http://www.csun.edu/~skatz/katzpage/sdr_project/sdr/grc_tutorial3.pdf) and if
> not, how do I go
> about translating the float input into something I can use to feed existing
> AM/FM/SSB demodulator
> flowgraphs?
>
> I run many other flowgraphs on Raspberry Pi's remotely so the networking and
> remote aspect of the
> project will be easy for me. I really just need some initial guidance knowing
> which direction to go
> in terms of tuning.
>
> Thanks!
> Brad
- [Discuss-gnuradio] Tuning in VLF with a sound card, Brad Hein, 2019/05/02
- Re: [Discuss-gnuradio] Tuning in VLF with a sound card,
address@hidden <=
- Re: [Discuss-gnuradio] Tuning in VLF with a sound card, address@hidden, 2019/05/02
- Re: [Discuss-gnuradio] Tuning in VLF with a sound card, Kevin Reid, 2019/05/02
- Re: [Discuss-gnuradio] Tuning in VLF with a sound card, Ben Hilburn, 2019/05/07
- Re: [Discuss-gnuradio] Tuning in VLF with a sound card, Brad Hein, 2019/05/07
- Re: [Discuss-gnuradio] Tuning in VLF with a sound card, Marcus D. Leech, 2019/05/07
- Re: [Discuss-gnuradio] Tuning in VLF with a sound card, Brad Hein, 2019/05/08
- Re: [Discuss-gnuradio] Tuning in VLF with a sound card, Albin Stigö, 2019/05/08
- Re: [Discuss-gnuradio] Tuning in VLF with a sound card, Brad Hein, 2019/05/08
- Re: [Discuss-gnuradio] Tuning in VLF with a sound card, Albin Stigö, 2019/05/08
- Re: [Discuss-gnuradio] Tuning in VLF with a sound card, Marcus D. Leech, 2019/05/08