Phase coherent inputs for GNU radio

[mgarrett1955]

Hello Pavel, this is not an issue, but a feature request (I think...)..

Unless I missed it, I would like to create a gnuradio block that has 2 channel phase coherent inputs, like the vna and the pulsed nmr examples.

Does this exist and I missed it?

I did try a gnuradio sdr_tranciever example, with two sources, set to the correct sockets, and I do see the two channels, but they are not phase coherent.

Thank you in advance for any suggestions!!

Michael

[mgarrett1955]

Looks like from a previou questions that the VNA example has two synchronous recievers, I will review that and see if it can be adapted.

[pavel-demin]

Although there are some projects (SDR transceiver compatible with HPSDR, Vector Network Analyzer) in this repository that implement phase-coherent receivers, I do not think that their phase-coherent receivers can be easily used in GNU Radio.

Adding this functionality to the SDR transceiver project would require an almost complete rewrite of that project.

I can only suggest trying to modify the Wideband SDR receiver project. I think that its receivers can be configured as two phase-coherent receivers relatively easily.