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Re: [Discuss-gnuradio] Need help identifying jammer signal
From: |
Miki Lustig - KK6GEO |
Subject: |
Re: [Discuss-gnuradio] Need help identifying jammer signal |
Date: |
Tue, 10 Dec 2013 14:00:39 -0800 |
These look like 2pi jumps -- which is the an artifact if the unwrapping is not
working well.
On Dec 10, 2013, at 1:55 PM, Johnathan Corgan <address@hidden> wrote:
> On 12/09/2013 07:26 PM, Juha Vierinen wrote:
>
>> I recorded a 10 second snippet of 50 kHz baseband signal in interleaved
>> I and Q with 32-bit floating point format.
>
> The signal is definitely frequency modulated, but it doesn't appear to
> be by data. Plotting the unwrap(diff(unwrap(arg(s))) shows a repetitive
> structure of 10 ms (500 samples) width, as if something is stepping the
> frequency up or down at 100 Hz in a random walk.
>
> --
> Johnathan Corgan, Corgan Labs
> SDR Training and Development Services
> http://corganlabs.com
> <rfi-modulation.png><johnathan.vcf>_______________________________________________
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- [Discuss-gnuradio] Need help identifying jammer signal, Juha Vierinen, 2013/12/06
- Re: [Discuss-gnuradio] Need help identifying jammer signal, Johnathan Corgan, 2013/12/06
- Re: [Discuss-gnuradio] Need help identifying jammer signal, Patrik Tast, 2013/12/08
- Re: [Discuss-gnuradio] Need help identifying jammer signal, Juha Vierinen, 2013/12/09
- Re: [Discuss-gnuradio] Need help identifying jammer signal, Ralph A. Schmid, dk5ras, 2013/12/09
- Re: [Discuss-gnuradio] Need help identifying jammer signal, Johnathan Corgan, 2013/12/10
- Re: [Discuss-gnuradio] Need help identifying jammer signal,
Miki Lustig - KK6GEO <=
- Re: [Discuss-gnuradio] Need help identifying jammer signal, Johnathan Corgan, 2013/12/11
- Re: [Discuss-gnuradio] Need help identifying jammer signal, Juha Vierinen, 2013/12/17
- Re: [Discuss-gnuradio] Need help identifying jammer signal, Ralph A. Schmid, dk5ras, 2013/12/18
- Re: [Discuss-gnuradio] Need help identifying jammer signal, Patrik Tast, 2013/12/18