How to get IQ samples from multiple rtl-sdr dongles in a synchronized manner?
sdrguru1 at gmail.com
Wed Jan 1 21:37:53 UTC 2014
Some of the recommendations.
Please add PPM error calculation, exactly like new rtl_test -p but multiple
It provides immediate information if something is wrong with USB or dongles.
Please add automatic eeprom PPM calibration
default sample rate 2.4M (28.8/12) or 1.2M (28.8/24), probably lower jitter
MAX_NUM_DEV 4->16 :)
Some nice to have features.
one common (interleaved) stream of all the receivers
I'm trying to convert MATLAB script to Ocatve.
On Mon, Dec 30, 2013 at 9:38 AM, Jiao Xianjun <putaoshu at gmail.com> wrote:
> Hi guys,
> For the multiple dongles synchronization in signal level instead of
> bits/packets level, I setup a working repo in github, and write a initial
> demo framework. See below:
> You may find information and instruction of demo quickly by reading the
> My initial purpose is performing in-fly calibration for multiple dongles
> according to some pre-known signal (GSM, ADS-B?) to let them work together
> An ideal scheme may be that we should generate a very narrow band and very
> week signal in (or just located at the edge of) target working band of
> dongles, and perform the software in-fly calibration in background (or
> driver level). This would be user friendly.
> I know it is far from final state currently, and many things are not clear
> yet (See TODO). But please join me if you also think this is a good idea.
> Just check out the demo and run it to have a look.
> Currently I just test the demo in Ubuntu-Linux.
> Jiao Xianjun
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