Re: [Discuss-gnuradio] Extracting and storing certain parameters from continuous IQ data

[Ali Riaz]

Hey Lou,

That's a very interesting approach, I'll look into your example as well. Thank you very much!

Best,

Ali

On Wed, Mar 11, 2015 at 4:39 PM, madengr <address@hidden> wrote:

You can also use probes to bring out the data asynchronously from the flow
which you can then process in Python.  For example, you could probe at a 10
Hz rate, then have your Python script log those values to a file, or trigger
some other event.  I have an example here where it probes the signal level
every second and logs it with GPS data:

https://github.com/madengr/drive_test

Lou



Ali Riaz wrote

> Hello everyone,
>
> So I was trying to capture continuous IQ data from my USRP N200, and this
> needs to be done for about a week, but because the amount of data is
> ginormous, that's doesn't seem feasible at all. Instead, what I'm now
> thinking of doing is processing the data in gnuradio companion in real
> time
> and just extracting certain parameters from the processed data, for
> instance, I would like to detect if there's a signal present or not, at
> what time was the signal detected, what's the maximum amplitude of the
> signal, how long did the signal last etc, and just store those pieces of
> information in a file.
>
> Are there any pre-existing blocks that I may use for this purpose? If not,
> can someone please guide me as to how to accomplish this task?
>
> This is what my flow graph looks like at the moment:
> http://imgur.com/a/O2gXi
>
> Thank you,
>
> Best,
> Ali
>

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