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

From: Marcus Müller
Subject: Re: [Discuss-gnuradio] Log raw data from the usrp_spectrum_sense.py
Date: Fri, 05 Dec 2014 11:16:52 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0

Hi Yang,

the Power of the FFT is only calculated inside the graphical sink, the
connection between the USRP source and the graphical sink represents a
complex sample stream.

I'm still not quite understanding what you really want the USRP to do,
would you mind explaining that again?

Best regards,

On 12/04/2014 09:08 PM, Leo Yang wrote:
> Hi sir,
> I have ran the uhd_msg_tune.grc,but its quiet hard to understand the python
> code for me. 
> I just set the sample rate to 40M, and centre frequency to 2.4G, it comes
> out power against the frequency of the signal and the graph seems more
> static than dynamic. 
> I wonder how it achieved without fft, and how to export the raw complex data
> instead of power? 
> cuz I want to install the gnuradio into a embedded system instead of PC, I'm
> working on the data collection, after get the raw data, I will pass it to
> the FPGA for the fft, and the output will be further processed for signal
> classification.
> Thanks a lot
> Yang
> --
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