Based on the GIPSY, a GPS data analysis software package developed at JPL, the strategies of fixed precise orbits and fixed precise orbits and clocks for regional GPS data analysis are compared.

• 采用美国喷气推进实验室 JPL发展的 GIPSY软件解算区域 GPS网 ,比较了固定精密星历和同时固定精密星历及卫星钟参数 2种解算方案。