Estimate of GPS P1-C1 DCB with PPP and the Analysis of its Stability
Pan Gao · Gnss World of China · 2011
Mathematical model of GPS P1-C1 DCB(Differential Code Bias) values estimated with PPP technology is introduced in this paper.Taking four tracking stations of BRUS,GODE,SHAO and NIST for example,with the observation data of October,2010,P1-C1 DCB of all GPS satellites are calculated.Compared to P1-C1 DCB products provided by CODE,results show that accuracy of estimated P1-C1 DCB is around several cm.In addition,according to the results,P1-C1 DCB changes slowly within a month.