Creating 4 channel coherent receiver

Hi,

I am looking for a suitable sdr solution for creating a 4 channel coherent receiver for passive radar applications.

Is it possible to synchronise multiple of any of the LimeSDR-s in phase using a common clock?

Thanks in advance

Yes, both LimeSDR USB (2x2 MIMO) and LimeSDR Mini (SISO) have connections for external reference. IIRC there are some steps that will be needed for phase alignment and if you search the forums you will find previous discussions. E.g.: