计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (13): 139-142.

• 数据库、信号与信息处理 • 上一篇    下一篇

导航星座中的载波相位星间精密测距技术

杜志远,刘会杰   

  1. 中国科学院 上海微系统与信息技术研究所 微小卫星工程中心,上海 200050
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-05-01 发布日期:2011-05-01

Accurate carrier-phase inter-satellite ranging in navigation system

DU Zhiyuan,LIU Huijie   

  1. Engineering Center for Microsatellites,Shanghai Institute of Microsystem and Information,Chinese Academy of Sciences,Shanghai 200050,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-05-01 Published:2011-05-01

摘要: 卫星导航系统受到越来越多国家的重视,而自主导航无疑是其中的核心技术之一。基于24/3/2构型的MEO Walker星座,分析了伪码测距技术的原理与局限性,在此基础上探讨了载波相位测距技术,以及其中周跳的检测与修复、整周模糊度求解问题,结合星间链路特点提出了两种相应的解决思路,即载波相位平滑伪码测距技术、双频载波相位联合伪码测距技术,对研究具有自主导航功能的全球导航系统具有一定意义。

关键词: 自主导航, 星间链路, 精密测距, 伪码测距, 载波相位测距

Abstract: More and more countries are attaching importance to satellite navigation system,and autonomous navigation is one of the key technologies.Based on 24/3/2 MEO Walker satellite system,this paper analyzes the theory and shortages of PRN ranging,carrier phase ranging along with relevant detection and recovery of cycle-slip.Ambiguity resolution is also introduced.In addition,carrier-phase smoothing PRN ranging and double frequency ambiguity resolution are specifically introduced,which would be meaningful for development of global navigation satellite system.

Key words: autonomous navigation, inter-satellite crosslink, accurate ranging, Pseudo Random Noise code(PRN) ranging, carrier phase ranging