Precise Point Positioning (PPP) has received increased interest within the GPS community for a number of reasons: simplified field operation, cost‐effectiveness, and no base station requirement. PPP with dual‐frequency receivers and precise GPS products has demonstrated centimeter to decimeter positioning accuracy. Using real‐time precise GPS products, this accuracy is also obtainable in a real‐time mode. This paper investigates PPP using single‐frequency GPS data which will be of interest to a broad range of applications because the majority of GPS users are using single‐frequency GPS receivers. Since the ionospheric effect will be the biggest error source for single‐frequency receiver based precise point positioning, different methods for ionospheric effect mitigation will be assessed and compared so that sub‐meter positioning accuracy becomes obtainable.
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