In order to solve the accuracy of the GPS data in Antarctica using the online GPS precise Positioning Service System,four online Precise Point Positioning service systems(APPS,CSRS-PPP,gaps and magicGNSS)were introduced and used to process long-term continuous observation data(7days)in Antarctica.By comparing the results with the real coordinates under the same reference frame,we can see that the accuracy of four systems can reach dm level,the accuracy and stabilization of APPS and CSRS-PPP are better than ...
0引言精密单点定位(precise point positioning,PPP)与差分定位是GPS高精度定位的两种主要模式。精密单点定位一般采用单台双频GPS接收机,利用IGS提供的精密星历和卫星钟差,基于载波相位观测值进行高精度定位[1]。GPS技术的发展也带动各种高精度GPS数据处理软件的研究发展,比如
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