GLONASS/BDS单历元单频RTK定位研究

Research on Single-Epoch and Single-Frequency GLONASS/BDS RTK Positioning

天空中导航卫星的可见数不断增加对整周模糊度的解算带来了有利的影响,极大改善了GNSS单历元单频RTK定位的精度和可靠性。针对GLONASS/BDS组合定位时的时空基准统一问题进行了分析;并针对GLONASS信号频分多址的特点,对GLONASS/BDS单历元单频RTK定位的数学模型进行了研究;最后通过实测数据对模型可行性进行了验证。结果表明,GLONASS/BDS单历元单频RTK定位是可行的,并且在北向上的定位精度要优于BDS单历元双频RTK定位。

The increasing of visible navigation satellite brings the benefits to ambiguity resolution and the accuracy and reliability of GNSS single-epoch and single-frequency RTK positioning is greatly improved. This paper discussed conversion of time and coordinates between BDS and GLONASS. And then, considering the characteristics of GLONASS signal with frequency division multiple access, the model of single-epoch and single-frequency RTK GLONASS / BDS positioning was studied in this paper. Then the feasibility of the model was verified with the measured data, and the result showed that single-epoch and single-frequency RTK GLONASS / BDS positioning is feasible.