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Recording IQ data with >20kHz bandwidth from a single KiwiSDR
It looks like I found a way to combine several IQ data streams from the same KiwiSDR recorded at different (by multiples of 12kHz or 20.25kHz) frequencies, so that the combined spectrum is continuous, see here. This uses GNURadio, so for everyone not familiar with GNURadio there is a learning curve.
There are obvious applications, i.e., monitoring of HF radars such as CODAR, and WBHF waveforms.
There are obvious applications, i.e., monitoring of HF radars such as CODAR, and WBHF waveforms.
Comments
Looks like:
1) I need to learn GNURadio.
2) I need to finally fix the CIC compensation problem (without destroying WSPR decoding this time, lol).
By the way there are some structures in the waterfall plots which look like they are artefacts (of course this can be a bug in my code):