Presentation at Automotive Ethernet Congress 2026, Munich, Germany, March 24-26, 2025
ADAS with coherent, multi-static, digital RADAR benefits from automotive Ethernet but demands more precise time synchronization and clock-phase recovery.
First we give an overview over time synchronization: NTP, GNSS, PTP, with a deep-dive into the PTP (including hardware assisted time stamping for accuracy and precision around 10 nanoseconds), down to the high-accuracy Precision Time Protocol IEEE 1588-2019 (PTP-HA) developed by CERN’s White Rabbit group for large scale physics experiments in need of < 1 ns accuracy and < 100 ps precision.
Second we present “Light Rabbit”, a collaboration between CERN and MLE. Using modern on-chip PLL for phase-shifting we complement (or replace) expensive VCXOs and trade-off BoM cost vs. minor loss of accuracy.
We close with experimental results for an OFDM RADAR network where Ethernet transports status, control and sensor data and distributes time (i.e. trigger), frequency and phase information to steer oscillators in the RF subsystem.
To learn more about the details, download the slides below or contact us for more information.