航空学报 > 1999, Vol. 20 Issue (2): 127-129

差分GPS载波相位测量整周模糊度的快速求解

胡国辉1, 孟浩2, 袁信1   

  1. 1. 南京航空航天大学自动控制系, 南京, 210016;2. 哈尔滨工程大学自动控制系, 哈尔滨, 150001
  • 收稿日期:1998-05-20 修回日期:1998-09-15 出版日期:1999-04-25 发布日期:1999-04-25

FAST CARRIER PHASE AMBIGUITY RESOLUTION FOR DIFFERENCE GPS

Hu Guohui1, Meng Hao2, Yuan Xin1   

  1. 1. Department of Automatic Control, Naijing University of Aeronautics & Astronautics,Nanjing,210016;2. Department of Automatic Control, Harbin Engineering University,Harbin,150001
  • Received:1998-05-20 Revised:1998-09-15 Online:1999-04-25 Published:1999-04-25

摘要:

对Cholesky分解整周模糊度的求解进行了改进,在求解整周模糊度的过程中,首先采用LAMBDA法对整周模糊度进行整数线性变换再作Cholesky分解,然后利用最优剪枝法(bestcut)对整周模糊度进行搜索,实验结果表明该方法具有快速搜索整周模糊度的能力,可以满足采用GPS载波相位测量确定姿态以及GPS载波相位测量与INS组合的实时性。

关键词: 导航, 整周模糊度, 载波相位, Cholesky分解

Abstract:

The paper presents a new development method for Cholesky ambiguity search method.The method makes use of an ambiguity reparametrization, Cholesky decomposition and best cut.Experiment results show that the method can achieve fast search ability, and satisfy real time attitude determination and GPS/INS integration with GPS carrier phase measurement.

Key words: navigat ion, ambiguity, carrier phase, Cho lesky facto rizat ion

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