| 基于UTC（NTSC）的GPS定时接收机时延测量 |
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| 引用本文： | 李孝辉,刘阳,张慧君,施韶华.基于UTC（NTSC）的GPS定时接收机时延测量[J].时间频率学报,2009,32(1):18-21. |
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| 作者姓名： | 李孝辉 刘阳 张慧君 施韶华 |
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| 作者单位： | 1. 中国科学院国家授时中心,西安,710600
2. 中国科学院国家授时中心,西安,710600;中国科学院研究生院,北京,100039 |
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| 基金项目： | 国家重点基础研究发展规划(973计划) |
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| 摘 要： | GPS提供了一种精密定时的方法，但接收机绝对时延的测量是一个难题，现有的测量方法成本高且难以操作，因而提出了一种GPS定时接收机时延测量的简单方法。这种方法根据国家授时中心保持的时间尺度UTC（NTSC）与GPS定时接收机输出的秒脉冲信号（1PPS）的比对结果，利用UTC（NTSC）的国际比对数据以及UTC与GPST的时差数据，可以测量GPS定时接收机时延，该方法简单易行。最后，对这种方法的测量误差进行了分析。
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| 关 键 词： | GPS 定时接收机 时延 |
Measurement of Time Delay of GPS Timing Receiver Based on UTC (NTSC) |
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| LI Xiao-hui,LIU Yang,ZHANG Hui-jun,SHI Shao-hua.Measurement of Time Delay of GPS Timing Receiver Based on UTC (NTSC)[J].Journal of Time and Frequency,2009,32(1):18-21. |
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| Authors: | LI Xiao-hui LIU Yang ZHANG Hui-jun SHI Shao-hua |
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| Institution: | LI Xiao-hui, LIU Yang, ZHANG Hui-jun, SHI Shao-hua(1. National Time Service Center, Chinese Academy of Sciences, Xi＇an 710600, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100039, China) |
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| Abstract: | The GPS provides an accurate timing method; however, the absolute time delay of timing receiver is difficult to measure, and for the existing method the cost is high and the operation is complicated; t therefore, a new and simple method to measure the time delay of GPS timing receiver is presented in this paper. Based on the time difference between the time scale UTC （NTSC）, which is generated and maintained at the National Time Service Center, and the 1 PPS signal output of the GPS timing receiver, the time delay of GPS timing receiver can be measured by using the international comparison link between UTC （NTSC） and UTC, and the time difference between UTC and GPST. The new method is simple and easy to use. The error of this method is also analyzed. |
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| Keywords: | GPS |
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