一种新的中长基线GNSS三频模糊度快速解算方法

A New Method for Medium and Long Baseline Triple-Frequency GNSS Rapid Ambiguity Resolution

提出一种新的无几何无电离层三频模糊度解算方法。该方法通过对伪距观测值赋予不同的权重,辅助宽巷及窄巷模糊度消除双差电离层残差的影响,使宽巷及窄巷观测值只受观测噪声的影响,通过多个历元平滑取整即可获取宽巷及窄巷模糊度值。通过实测GPS/BDS中长基线三频数据验证分析表明,该方法可以有效地实现中长基线模糊度的快速解算。

This paper proposes a new geometry-free and ionosphere-free triple-frequency ambiguity res-olution（NGIF-TCAR）. The new method can aid wide-lane ambiguity and narrow-lane ambiguity to e-liminate ionospheric residuals by assigning pseudorange observation different weight value. Both wide-lane and narrow-lane ambiguity are affected by observation noise, and can be success fully fixed byrounding off the average float ambiguity over several epochs. The new method can effectively achievethe long baseline ambiguity rapid resolution by using the measured GPS/BDS of medium and longbaseline triple-frequency data.