克里金插值的多路径误差空间分布特征

针对多路径误差的空间分布特征,该文提出采用克里金插值法构建多路径误差的空间插值模型。通过采用ArcGIS中克里金插值工具构建的多路径误差的空间插值模型,较好地展现出多路径误差与测站位置、反射源距离等因素的空间分布特征。实验结果表明:对比泛克里金插值法、普通克里金插值法、简单克里金插值法3种方法构建的多路径误差插值模型,普通克里金插值法的效果最好。研究成果直观反映出在林区、多层建筑物等环境下多路径误差影响较大,还预测出未采样区域的多路径误差影响范围,该研究成果可应用于GPS观测站选址、GPS测量技术设计等领域。该文从空间分布特征的角度提出了一种新的研究多路径误差特性的思路,实现了对指定测区内的多路径误差的空间分布特征的探究。

Spatial distribution characteristics of multipath error based on Kriging interpolation method

In view of the spatial attributes of multi-path error,this paper constructed the spatial interpolation model of the multipath error by Kriging interpolation method.Through the use of Kriging interpolation tool in ArcGIS software to construct multipath error of spatial interpolation model,the model better show spatial distribution characteristics of multipath error and measuring station location,reflection source distance factors.The experimental results show that the three methods of universal Kriging interpolation,ordinary Kriging interpolation method and simple Kriging interpolation method,the effect of ordinary Kriging interpolation method is best.The results of the research can directly reflect the impact of multipath errors in forest and multi-story buildings,and also predict the range of multi-path error in the non-sampling area,the research results can be applied in the field of site selection of GPS observation station,GPS measurement technology design and so on.This paper proposes a new method to study the characteristics of multi-path error from the point of view of spatial distribution,and in this paper,it realizes research of the spatial distribution characteristics of multi-path error in the specified measurement area.