空间科学学报2018，Vol.38Issue(2)：249-254,6.DOI:10.11728/cjss2018.02.249
基于伪距差分增强的分布式节点时间同步方法
Pseudo-range Differential Integrated Time Synchronizing Method for Anchor Nodes
欧阳晓凤 1吕大千 1曾芳玲1
作者信息
- 1. 国防科技大学电子对抗学院 合肥230037
- 折叠
摘要
Abstract
Traditional time synchronization method could reach a high precision for distributed nodes,but does not apply to the spatially non-contact nodes.In order to solve the above problems,a time synchronization method based on pseudorange differential GPS was proposed,and the system principle and synchronization scheme are given.Moreover,the clock model of the Anchor Nodes (ANs) is built to estimate synchronization parameter,which is solved by the Total Least Squares (TLS) method.The Kalman Filter (KF) method is derived from the theoretical time synchronization module,which can enhance the real timing and precision.The results of numerical simulating show that the proposed system synchronization and parameter estimation methods can control the synchronization accuracy of distributed node in sub-nanosecond level.关键词
时间同步/分布式节点/伪距差分/卡尔曼滤波Key words
Time synchronization/Anchor nodes/Pseudo-range difference/Kalman Filter分类
信息技术与安全科学引用本文复制引用
欧阳晓凤,吕大千,曾芳玲..基于伪距差分增强的分布式节点时间同步方法[J].空间科学学报,2018,38(2):249-254,6.
