Comparative Study between Precise Point Positioning (PPP) Versus Relative Positioning

Mahmoud I. El-Mewafi, Ahmed A. Awad, Abd El-Rahman A. Yassien

Abstract: With the development of the International GNSS Service, whose primary object is to provide highest quality data and products for research, education and multidisciplinary application, the concept of Precise Point Positioning began to receive more and more interest on the problem called ?positioning?. Nowadays because of this development, the PPP technique it started to grow on the detriment of the relative GNSS positioning. PPP, it is able to offer point determination by processing undifferenced dual frequency receiver, combine with precise orbit and clock corrections offered by IGS to obtain centimeter accuracy. The aim of this paper is to make a comparative study between Precise Point Positioning (PPP) versus relative positioning under different conditions. The conditions or constrains used in this study are observation period and base line length. We apply base line technique in relative solution to spot the errors without adjustment that applied in network technique.

Keywords: GNSS, IGS, Precise Point Positioning, relative positioning, accuracy.