Over-the-Air Synchronization of Automotive Distributed Radar Networks by Using 3D-Printed Antennas

In this work, two possibilities for over-the-air synchronization of distributed radar systems are evaluated in simulation. Therefore, a direct path between the radar nodes is used to establish a reference link by which all necessary parameters can be estimated. Additionally, a synchronization with less effort but using a target is compared. Simulations show that both synchronization techniques can achieve a coherent antenna array through signal processing. Additionally, a 3D-printed antenna is proposed to enable a direct path between the radar nodes.