对基于非差误差模型的HiRIM方法和现有基于双差误差模型的网络RTK方法进行了理论上的描述和特性上的比较分析,证明了在地面处建模时两类方法的等价性,推导了在地面处与地面上方不同高度处建模时最大差异的精确计算公式,论证了直接利用参考站大地坐标在地面构建区域电离层模型的可行性,并通过山西省CORS网的一组实测数据验证了其有效性。
This paper describes and analyses the the existing double-differenced modeling method these methods when modeling on the ground, p ionospheric delay on the ground compared with undifferenced modeling s of net resents work RTK, prov the ma modeling using method HiRIM and es the equivalence of ximum difference of modeling ionospheric pierce point, andthe validation of constructing local ionospheric model on the ground is also demonstrated with a set of tests from SXCORS.