约束信息辅助整周模糊度求解研究

Research of ambiguity resolution with constraint information

研究了在双天线姿态测量中应用先验几何信息加快整周模糊度求解问题,首先采用Kalman滤波估计初始浮点模糊值,然后采用基线约束和高度约束辅助LAMDA解算整周模糊度,并给出了计算机实验结果。与传统的模糊度解算算法相比,整周模糊度解算方法能有效缩小可能的模糊值状态集合,提高解算效率,对GPS实时高动态定位和GPS实时姿态测量技术的工程应用及理论研究具有一定的参考价值。

In twin antennae attitude determination the speeding up ambiguity resolution using many apriori geometric information is developed. The first step is the estimation of an initial approximate solution using Kalman filtered float solution. Then integer ambiguity has been resolved utilizing the constrain information augmented LAMDA( Least-squares ambiguity decorrelation adjustment) algorithm and the computer experimental results are given. The experimental results show that the algorithm in this paper compared with traditional ambiguity resolution one possesses effective reducing possible ambiguity sets, improving the efficiency of ambiguity resolution and definite reference value in engineering application and theory research of GPS real-time high dynamic positioning and GPS real-time attitude measurement technology.