短帧开环结构的无线时间同步设备

• Format: Patent
• Language: Chinese
• Published: 26.01.2024
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MULTIPLEX COMMUNICATION; WIRELESS COMMUNICATIONS NETWORKS

本发明公开了一种短帧开环结构的无线时间同步设备，包括主设备和从设备；主从设备中均包括基带发射单元、射频发射单元、射频接收单元和基带接收单元和时间同步单元。时间同步单元根据精准时间协议进行时间戳的标定和主从设备时间偏差的计算；封装成帧单元将时间戳、校验码、数据帧头及导频序列封装成数据帧。其中，伪码捕获单元采用FFT快捕，并对接收信号进行粗频偏校正；接收单元对接收数据进行多倍采样；数字式发射单元可在天线允许的频带范围进行发射频点的软切换；数字式接收单元可在天线允许的频带范围进行接收频点的软切换。本发明通过短帧开环的结构，降低了系统的复杂度，提高了发送信号的抗干扰能力。 The invention discloses a wireless time synchronization device of a short frame open loop structure. The wireless time synchronization device comprises a master device and a slave device. Each of the master device and the slave device comprises a baseband transmitting unit, a radio frequency transmitting unit, a radio frequency receiving unit, a baseband receiving unit and a time synchronization unit. The time synchronization unit carries out timestamp calibration and master-slave equipment time deviation calculation according to a precise time protocol; the packaging and framing unit packages the timestamp, the check code, the data frame header and the pilot frequency sequence into a data frame. Wherein the pseudo code capturin