Re: [Discuss-gnuradio] USRP network based spectrum analyzer

On 9/28/11 4:54 PM, Marcus D. Leech wrote:
> On 28/09/2011 4:50 PM, Phelps Williams wrote:
>> I have a usrp and computer in a remote location without much network
>> bandwidth available to the system and I'm using it as a spectrum
>> analyzer. I'd like to run the fft on the remote system and then send
>> the results to a connected client for display. This would allow me to
>> get greater fidelity than xwindows forwarding or the ascii dft example
>> while also using less bandwidth. I would imagine the client side
>> would potentially reuse some of the existing wx or qt interfaces for
>> display and control.
>>
>> This seems like a pretty useful / simple use of this hardware. Does
>> anybody know of any implementations floating around that does this?
>> I'd prefer not to reinvent the wheel.
>>
>> -Phelps
>>
> You could use a GRC-based flow-graph that computes the FFT, and outputs
> the results to a FIFO, and have a small C program that simply puts
> "snapshots" in an appropriate place. Once it's in an "appropriate
> place" (and perhaps in a form that you like), you could use a web server
> to observe the results. Roughly 1e6 ways of skinning this particular
> cat.

Why not just use VNC? Its generally much lower bandwidth than X forwarding.

@(^.^)@ Ed

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