| GNSS超快速产品在全球标准时间复现中的应用 |
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| 引用本文： | 许龙霞,樊多盛,刘娅,陈瑞琼,李孝辉.GNSS超快速产品在全球标准时间复现中的应用[J].导航定位于授时,2022,9(1):134-140. |
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| 作者姓名： | 许龙霞 樊多盛 刘娅 陈瑞琼 李孝辉 |
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| 作者单位： | 中国科学院国家授时中心,西安710600;中国科学院精密导航定位与定时技术重点实验室,西安710600,中国科学院国家授时中心,西安710600,中国科学院国家授时中心,西安710600;中国科学院精密导航定位与定时技术重点实验室,西安710600;中国科学院大学电子电气与通信工程学院,北京101048 |
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| 基金项目： | 国家自然科学基金面上项目（12073033）；中国科学院西部青年学者项目（XAB2020YN07）；中国科学院青年创新促进会项目(1188000XLX |
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| 摘 要： | 为满足大跨度空间范围内的时间同步需求,对基于共视时间比对原理的标准时间复现系统进行改进,采用全视时间比对方法解决原系统应用基线受限的问题.考虑实时性的要求,使用全球卫星导航系统(GNSS)超快速产品(预测部分)提供卫星位置和卫星钟差,以尽可能消除广播星历和钟差对复现结果的影响.分析了常用的几家机构发布的GNSS超快速产...
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| 关 键 词： | 时间同步 GNSS超快速产品 共视时间比对 全视时间比对 钟驾驭 |
Application of GNSS Ultra-rapid Products in
Standard Time Reproduction |
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| XU Long-xi,FAN Duo-sheng,LIU Y,CHEN Rui-qiong,LI Xiao-hui.Application of GNSS Ultra-rapid Products in
Standard Time Reproduction[J].Navigation Positioning & Timing,2022,9(1):134-140. |
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| Authors: | XU Long-xi FAN Duo-sheng LIU Y CHEN Rui-qiong LI Xiao-hui |
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| Institution: | (National Time Service Centre, Chinese Academy of Sciences, Xi'an 710600, China;Key Laboratory of Precision Navigation and Timing Technology, Chinese Academy of Sciences, Xi'an 710600, China;School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101048, China) |
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| Abstract: | To meet the needs of time synchronization between long distances, the all-in-view time transfer technique is adopted to solve the problem of the common-view time transfer based standard time reproduction system being only effective in limited range. The GNSS ultra-rapid products (the prediction part) are used to provide the satellite positions and clock biases to eliminate the influence of ephemeris errors and clock errors on the reproduction results. This paper analyzes the different ultra-rapid products released by several institutes, and some methods are discussed to select, download and apply the ultra-rapid products in time reproduction. Besides, the influence of changing products of different institutes and the different time reference of clock biases on all-in-view based standard time reproduction are mainly discussed. |
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| Keywords: | Time synchronization GNSS ultra-rapid products Common-view time transfer All-in-view time transfer Clock steering |
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