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针对虚拟参考站网络差分定位的关键技术，提出了虚拟相位观测值及差分改正信息生成的算法模型。
The key technique of network differential positioning based on virtual reference station, the algorithm the generation of virtual phase observation and differential corrections was proposed.
求解程序采用虚拟压缩方法和双时间步的时间推进方案，对流项的差分采用高阶精度的数值差分格式。
The present solver USES a primitive variable formulation that is based on the artificial compressibility method combined with dual time stepping method.
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