宇航计测技术 ›› 2012, Vol. 32 ›› Issue (3): 17-20.doi: 10.12060/j.issn.1000-7202.2012.03.05

• 论文 • 上一篇    下一篇

长波授时附加二次相位因子ASF误差分析

李瑞敏1,2；苏建峰2；王娜1,2   

  1. 1、中国科学院研究生院，北京 100080；2.中国科学院国家授时中心，西安 710600
  • 出版日期:2012-06-15 发布日期:2012-06-15

Analysis the Error of the ASF in Long-wave Time Service

LI Rui-min 1,2；SU Jian-feng2；WANG Na 1,2   

  1. 1、Graduate University of Chinese Academy of Sciences, Beijing 100080;
    2、National Time Service Center, Chinese Academy of Sciences, Xi’an 710600
  • Online:2012-06-15 Published:2012-06-15

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摘要： 为提高长波授时精度，分析了影响ASF误差的因素。主要针对米林顿法计算ASF中的地图测距误差、大地等效电导率误差和大地等效电导率区域分割误差，设计实验、采集数据、分析实验结果，并提出减小ASF误差的新方案。

关键词: 长波授时, 附加二次相位因子, 大地电导率, 过渡区

Abstract: To improve the long-wave timing accuracy, the factors were analyzed that affected the errors of ASF. In the progress of calculated the ASF by Millington algorithm, experiments were designed to point at the errors of the map location, the ground conductivity and the region segmentation, then, collected data and analyzed the results. Finally, the new methods to reduce the errors of ASF put forward.

Key words: Long-wave time service, Additional second-phase factors (ASF), Ground conductivity, Transition region

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