I understand I need 4 antennas in order to be able to calculate the position of reflector regardless the orientation of the initiator, right? The evaluation board QM35825DK-05 comes with 2D positioning, what would be the easiest way to get a 3D AoA?
How compact can the 4 antenna setup be? Is tetrahedral layout the way to follow for quality? Precision is not critical for my use case but range is.
BTW, what processing power is required to do a 3D AoA calculation? Is it something some STM or ESP32 could to in few seconds? Or would I want to to use something like NXP SR250 for the calculation?