基于北斗的高精度时钟设备检测系统
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张丽萍(1983.05—),陕西蒲城人,硕士,工程师,主要研究方向为卫星导航及授时

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P228

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High-Precision Clock Equipment Detection System Based on BDS
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    摘要:

    描述了一种基于北斗的高精度时钟设备检测系统。该系统利用北斗接收机对内置铷钟进行实时驯服和校正,作为系统时频基准,通过直接数字式频率合成器技术产生各模块所需的时频源,再分别经过信号调制和调理输出所需的最终信号(各种频率信号和E1信号)。同时,系统对正弦波、方波和三角波波形调理,采用多周期多相位同步方法实现各种频率信号的测量;并通过FPGA实现多种时频信号的测试,包括B码信号、精密时间协议(PTP)信号、网络时间协议(NTP)信号和秒脉冲+对天时间(1PPS+TOD)信号。

    Abstract:

    A high-precision clock equipment detection system based on BDS is described. A BDS receiver is used by the system to perform real-time training and calibration on the built-in rubidium clock as the system time-frequency reference. It generates the time-frequency sources required by each module through Direct Digital Synthesizer technology, and then modulates and conditions the desired final signals (various frequency signals and E1 signals) separately. In addition, the system can regulate sine waves, square waves, and triangular waves, and design multi-cycle and multi-phase synchronization methods to measure various frequency signals; it also achieves measurements for various time-frequency signals through FPGA, including IRIG-B signals, Precise Time Protocol (PTP) signals, Network Time Protocol (NTP) signals, and 1Pulse Per Second+Time Of Date (1PPS+TOD) signals.

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张丽萍,贺星,王晓晨,李晨航.基于北斗的高精度时钟设备检测系统[J].现代导航,2024,15(1):39-44

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  • 收稿日期:2023-10-30
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  • 在线发布日期: 2024-04-15
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