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논문검색

An Algorithm for Inter-Satellite Autonomous Time Synchronization and Ranging in the Beidou Navigation Satellite System

원문정보

Pan Yi, Liu Huafu, Zhang Zhuxian, Huang Feijiang, Cai Chenglin, Feng Lu

보안공학연구지원센터(IJFGCN) International Journal of Future Generation Communication and Networking Vol.9 No.7 2016.07 pp.229-238
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초록

영어

Aiming at the requirement of the autonomous time synchronization in BeiDou Navigation Satellite System (BDS), an algorithm for inter-satellite autonomous time synchronization and ranging is proposed. Based on the establishment of the inter-satellite link length model of the BDS, a series of simulation has been carried out through the use of STK (Satellite Tool Kit), which includes the simulation of the length changing rules, the length variation scale and its variation ratio. Based on these simulations, an analysis of the impact of satellite motion on the inter-satellite two-way time synchronization and range has been presented. In this algorithm, the inter-satellite clock-offset and range with minimal error are acquired by utilizing the combination of clock-offset fitting polynomial and range fitting polynomial based on the least square fitting of data generated from the inter-satellite two-way time synchronization. Empirical evaluation of the BDS simulation shows that our time synchronization error is 2ns, and ranging error is 2m under the condition of acceptable simulation error. With the application of the algorithm to the inter-satellite autonomous time synchronization and ranging, the high-accuracy measurement of inter-satellite clock-offset and range of BDS can be reached.

목차

Abstract
 1. Introduction
 2. Theory of Inter-satellite Autonomous Time Synchronization and Ranging
 3. Constellation Parameters and Inter-satellite Link Length Model of BDS
  3.1 Constellation Parameters of BDS
  3.2 Inter-Satellite Link Length Model
  3.3 Simulation Results for the Length of the BDS Inter-Satellite Link
 4. Inter-satellite Autonomous Time Synchronization and Ranging Algorithm by the Fitting Method
  4.1 Effect of Satellite Motion on Inter-Satellite Two-Way Time Synchronization and Ranging
  4.2. Inter-Satellite Autonomous Time Synchronization and Ranging Algorithm based on the Fitting Method
 5. Analysis of Simulation Results
  5.1. Simulation Results for Inter-Satellite Autonomous Time Synchronization
  5.2. Simulation Results of Inter-Satellite Autonomous Ranging
 6. Conclusions
 Acknowledgements
 References

키워드

저자정보

  • Pan Yi Department of Mathematics and Computer Science, Changsha University, Changsha, 410022, China
  • Liu Huafu Department of Mathematics and Computer Science, Changsha University, Changsha, 410022, China
  • Zhang Zhuxian Department of Electronic Information and Electrical Engineering, Changsha University, Changsha, 410022, China
  • Huang Feijiang Department of Electronic Information and Electrical Engineering, Changsha University, Changsha, 410022, China, Guangxi Colleges and Universities Key Laboratory of Satellite Navigation and Position Sensing, Guilin, 541004, China
  • Cai Chenglin School of Information and Communication, Guilin University of Electronic Technology, Guilin, 541004, China, Guangxi Colleges and Universities Key Laboratory of Satellite Navigation and Position Sensing, Guilin, 541004, China
  • Feng Lu Department of Electronic Information and Electrical Engineering, Changsha University, Changsha, 410022, China

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