Re: [Discuss-gnuradio] Log raw data from the usrp_spectrum_sense.py

[Marcus Müller]

> When u say complex samples, i thought it should in time domain,

yes, these are time domain samples.

> I just want use USRP to
> collect the a wide band signal around and save the data to the txt file, 

Usually, there's no good reason to save millions of samples in text
format -- it's not really useful, just big.
If you, for some reason, need that, you can either write your own sink
that does that, or use python, octave, matlab, C, C++, or whatever you
like to load the binaries and print out strings representing complex
numbers textually.

> so i use the usr_spectrum_sense.
usrp_spectrum_sense is really a visualization demo.
If you just want to save the signal from a USRP to a file, that's a two
block flow graph in the GNU Radio companion: Just connect the USRP
Source to a File Sink, parameterize both to your likings, and you're done.

If that sounds strange to you, I can really recommend going through the
guided tutorials 1, 2 and 3, and most of your questions will be answered :)
http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorials

Greetings,
Marcus


On 12/01/2014 05:14 PM, Leo Yang wrote:
> When u say complex samples, i thought it should in time domain, and after the
> the fft block, it transfer to frequency domain. I just want use USRP to
> collect the a wide band signal around and save the data to the txt file, so
> i use the usr_spectrum_sense.
>
> and how to make the binary samples visualized and could be processed?
> or the s2v is the thing I may consider?
>
>
>
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