The Impact Analysis of P1C1 Code Bias on Convergence of PPP

This paper analyzed the satellite differential code bias (DCB) generated principle. Deduced the DCB correction formula of PPP. With multiGNSS experiment data and precise clock／orbit／dcb products, this paper undertakes a thorough evaluation of DCB’s influence on convergence of PPP. The results show the convergence time obviously reduced when corrected P1C1 DCB, in which the static PPP convergence time is reduced by an average of 10 minutes, dynamic PPP average reduced by an average of 20 minutes, correct P1C1 DCB on PPP accuracy is generally in millimeter level.