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The Parallel Computing of GPS Ray-shooting Model
GPS"射线打靶”模式的并行计算

Keywords: GPS ray-shooting,Parallel computing,Efficiency,Scalability
GPS射线打靶
,并行计算,效率,可扩展性

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Abstract:

The Global Positioning System (GPS) ray-shooting model is a self-sufficient observation operator in GPS MET (Meteorology) data variational assimilation linking up the GPS observation data and the atmospheric state variables. But its huge computations make it impracticable in real data assimilation so far. In order to overcome this default, a parallel version of the GPS ray shooting model has been developed,and has been running successfully on the PC cluster manufactured under the support of the China National Key Development Planning Project for Basic Research: The Large Scale Scientific Computation Research.High speed-up and Efficiency as well as good scalability are obtained. This is an important step for this GPS observation operator to become practicable.

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