[hpsdr] GPSDR_io - An open standard for time-stamped RF data exchange.

[Mike Hamel]

Van,

I'm sure the heavy lifters on this group could (if not already done...)
write an algorithm that sifts through the whole IF in the digital domain
and detects a very broadband signal (like a lightning transient) rather
than picking 2 places in the resulting FFT data and checking for common
signals.

It would seem that an array of receivers / antennas in multiple
locations could provide some process gain as well, which is what I think
you are saying here.

I became enamored with this when I was streaming the webSDR in the
Netherlands on my computer and listening to the same frequency on my old
HF rig at the same time. There were some signals I could hear on both,
and the net latency became obvious, but sometimes not actually half bad.

As far as timestamping goes, you want the A/D clocks in the multiple
locations synchronized pretty closely, but maybe it would be more
efficient to timestamp FFT point results and share those rather than
blocks of raw data?

I dunno....I'm in WAY over my head here. I have a general idea how stuff
works but just enough info to be dangerous. As such I apologize for the
"molotov ideas" I've been tossing in here.

Thanks all,

Mike
wo1u

L. Van Warren wrote:
> ***** High Performance Software Defined Radio Discussion List *****
> 
> Mike -
> 
> Excellent points, looking forward to hearing more of them. Noise
> cancellation is particularly interesting since noise "heard" by one observer
> may not be heard by another (in the same way). This opens the way for
> reconstructing signals from a multitude of observers which would have simply
> been undetectable before.
> 
> - Van / AE5CC / wdv.com 
> 
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