I am going to work on my project that is including two adalm pluto sdr ad9363 rev C with enabled 2r2t mode. The aim of the project is using 4 antennas direction of arrival estimation and digital beamforming systems. Each device use its own 40 MHz crystal oscillator it causes frequency and time offset. If i know right, clock synchronization is not allowed for this model. There may be different approach to compensate that phase difference between two devices using pilot based software synchronization. I need to synchronize the receiver side this approach is useful but not enough to do doa and beamforming calculation since carrier frequency offset has never been reached 0 value. Is there any different way to make this two device phase coherence except that changing the sdr to any other model like ad9361 ?
