A New Device for Two-Way Time-Frequency Real-Time Synchronization

Ke Zhang,
Decai Zou,
Pei Wang,
Wenfang Jing,

Abstract


The netted wireless sensor nodes or coherent accumulation processing in multistatic radar imaging requires high accuracy time synchronization. Although GNSS timing can also be used as a time synchronization method to serve the applications above, its timing accuracy will be limited. In this context, we present the hardware implementation for Two-Way Time-Frequency Real-Time Synchronization (TWTFRTS) with an automatic adaptive jitter elimination algorithm based on Kalman and PID, which is implemented in a real-time, low-cost, portable Xilinx ZYNQ device. A short (2 km) baseline TWTFRTS experiment was done with a pair of devices composed of a master device and a slave device. The result shows a high precision of time synchronization performance with the standard deviation (1 σ) better than 1 ns.

Keywords


Time-frequency synchronization, Microwave link, Kalman filter, PID control, ZYNQ

Citation Format:
Ke Zhang, Decai Zou, Pei Wang, Wenfang Jing, "A New Device for Two-Way Time-Frequency Real-Time Synchronization," Journal of Internet Technology, vol. 24, no. 3 , pp. 817-824, May. 2023.

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