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Table 3 PPP strategy

From: Quasi-4-dimension ionospheric modeling and its application in PPP

Solution

Processing mode of ionospheric delay

IF

GRAPHIC combination for SF, and IF combination for DF

CODG

DESIGN with CODG GIM product as a priori correction model

Q4DIM-2D

DESIGN with Q4DIM-2D product as a priori correction model

Q4DIM

DESIGN with Q4DIM product as a priori correction model