中国空间科学技术

中国空间科学技术

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一种用INS辅助GPS周跳检测和求解整周模糊度的方法

赵伟,万德均,刘建业   

  1. 东南大学,东南大学,南京航空航天大学 南京210096 ,南京210096 ,南京210016
  • 发布日期:2004-04-25

Research on Method of GPS Cycle-slip Detection and Ambiguity Determination Aided by INS

Zhao Wei Wan Dejun (Southeast University, Nanjing 210096) Liu Jianye (Nanjing University of Aeronautics and Astronautics, Nanjing 210016)   

  • Online:2004-04-25

被引次数

20

摘要： 在INS/GPS全组合导航系统中 ,需要利用GPS载波相位测量信息 ,其中整周模糊度的确定和周跳的检测是两个关键的技术。文中提出了利用INS信息对GPS解算过程中的周跳检测和整周模糊度的确定进行辅助解算的简易快速算法 ,并进行了计算机仿真。仿真结果表明 ,文中提出的INS辅助GPS的周跳检测简易算法可以有效的检测出发生的小到一周的周跳 ;在一定条件下 ,利用INS信息辅助GPS可以瞬时可靠地求解出整周模糊度

关键词: 组合导航, 全球定位系统

Abstract: In INS/GPS integrated navigation system, there are two key processes when using carrier phase of GPS. A simple algorithm to determine ambiguity and to detect cycle slip assisted by using INS is brought up in this paper. Mathematics model is deduced and computer simulation is carried out to check the validity of arithmetic. The result shows that cycle slip less than one wavelength can be detected and ambiguity can de determined instantaneously on certain condition.