It seems my #gnuradio #correlator actually works, though I am still somewhat skeptical.

This is from a #limesdr correlating its two mu-mimo inputs.

The second picture is what happens when you disconnect one of the antenna from the input showings its not just correlating its own noise.

🌌 We are pleased to announce that the APEX telescope in Chile is now fully integrated into the global mm-VLBI network (GMVA)! 🎉 Thanks to the new 3mm receiver, we were able to detect interferometric fringes between APEX and antennas worldwide 🌐, confirmed by the MPIfR #Correlator Center.

📅 This breakthrough was achieved during the observations from October 11-13. 🌍📡

#VLBI #GMVA #APEX #RadioAstronomy