Title: Statistical Comparison of PPP Solution Obtained by Online Post-Processing Services
Author(s): Paolo Dabove and Marco Piras, Kawuna Namkusong Jonah
Published in: Proceedings of IEEE/ION PLANS 2016
April 11 - 14, 2016
Hyatt Regency Hotel
Savannah, GA
Pages: 137 - 143
Cite this article: Dabove, Paolo, Piras, Marco, Jonah, Kawuna Namkusong, "Statistical Comparison of PPP Solution Obtained by Online Post-Processing Services," Proceedings of IEEE/ION PLANS 2016, Savannah, GA, April 2016, pp. 137-143.
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Abstract: The concept of Precise Point Positioning (PPP) for Global Navigation Satellite System (GNSS) technology was introduced in 1976, however it took until the 1990s for PPP to generate interest amongst the greater GNSS community. In order to evaluate the performance of PPP and its uses for CORSs Network definition, data collected from geodetic receivers belonging to permanent stations of Nigeria network (NIGNET - http://www.nignet.net/) were used. PPP was chosen as an option because the stations belong to the network are still sparsely distributed and the data are not available on a perfect continuous basis. However, the PPP approach could form basis for the mass-market sensor data acquisition since it works using the principles of relative positioning. Therefore, to test the algorithm of the PPP, there is the need for using best set of data available. Considering some software freely available online and others available offline, each file for each day is processed using different strategies, and results were obtained for each method for the entire fifteen days. Some statistical analysis and comparisons between obtained results were computed thanks to a routine written in Matlab, in order to obtain the overall average for the entire fifteen days. The procedure was repeated for all the stations used and the outcome is shown. From the result obtained in this paper, it can be deduced that the online processing software provide still highly reliable solutions. Differences between estimated and reference positions are in the other of 1-10 cm, in both horizontal and vertical components, for almost all software. In this context, PPP can be considered an interesting technique to determine the CORS’ reference coordinates. Despite the sessions length (very long), PPP can be considered a great alternative respect to the relative techniques for many applications (e.g. cadastral applications) where high accuracy is required.