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基于衛星雙向時(shí)間比對的無(wú)中心站間時(shí)間同步
電子技術(shù)應用
仇三山1,于雯2,孫長(cháng)軍2,王宏博3
1.中國電子科技集團公司第十研究所;2.北京跟蹤與通信技術(shù)研究所;3.北京無(wú)線(xiàn)電計量測試研究所
摘要: 針對多站分布式協(xié)同站間高精度時(shí)間同步關(guān)鍵問(wèn)題,在詳細介紹衛星雙向時(shí)間比對的基本原理和精度分析基礎上,設計了一種無(wú)中心多站衛星雙向比對邏輯架構和多站時(shí)間同步處理算法,充分考慮硬件資源約束,并提供時(shí)差測量數據冗余,避免了因某個(gè)站故障造成的全系統時(shí)間同步功能失效,提高系統時(shí)間同步的魯棒性和靈活性?;诰軉吸c(diǎn)定位技術(shù)進(jìn)行了異地遠程衛星雙向時(shí)間同步精度驗證,試驗結果表明時(shí)間同步精度優(yōu)于6 ns。
中圖分類(lèi)號:TN249 文獻標志碼:A DOI: 10.16157/j.issn.0258-7998.234744
中文引用格式: 仇三山,于雯,孫長(cháng)軍,等. 基于衛星雙向時(shí)間比對的無(wú)中心站間時(shí)間同步[J]. 電子技術(shù)應用,2024,50(6):107-110.
英文引用格式: Qiu Sanshan,Yu Wen,Sun Changjun,et al. The no-center time synchronization based on two-way satellite time transfer[J]. Application of Electronic Technique,2024,50(6):107-110.
The no-center time synchronization based on two-way satellite time transfer
Qiu Sanshan1,Yu Wen2,Sun Changjun2,Wang Hongbo3
1.The 10th Research Institute of China Electronics Technology Group Corporation;2.Beijing Institute of Tracking and Telecommunications Technology;3.Beijing Institute of Radio Metrology and Measurement
Abstract: Aiming at the key problem of high precision time synchronization between multi-station distributed cooperative stations,the basic principle and accuracy analysis of the two-way satellite time transfer are introduced in detail. A kind of no-center satellite two-way time transfer architecture and time synchronization algorithm are designed. Considering hardware resource constraints and providing redundant time difference measurement data, it avoids the failure of the entire system time synchronization function caused by a station failure,the robustness and flexibility of time synchronization are improved. Based on the PPP(Precise Point Positioning),the time synchronization accuracy of long-range Two-way satellite time transfer if verified,better than 6 ns.
Key words : satellite two-way time transfer;no-center;time synchronization;system time;PPP

引言

站間時(shí)間同步是多站分布式協(xié)同工作的前提,如多站協(xié)同導航、多站時(shí)差定位等均需要實(shí)現各個(gè)站之間的高精度時(shí)間同步,以滿(mǎn)足系統應用精度要求。實(shí)現多站遠程時(shí)間比對的典型方法有光纖雙向時(shí)間比對法、衛星雙向時(shí)間比對法、導航衛星快速共視法。

本文主要針對基于衛星雙向時(shí)間比對的多站間高精度時(shí)間同步進(jìn)行設計與精度驗證進(jìn)行論述。


本文詳細內容請下載:

http://www.ihrv.cn/resource/share/2000006040


作者信息:

仇三山1,于雯2,孫長(cháng)軍2,王宏博3

(1.中國電子科技集團公司第十研究所,四川 成都 610036;

2.北京跟蹤與通信技術(shù)研究所,北京 100094;

3.北京無(wú)線(xiàn)電計量測試研究所,北京 100854)


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