Development of Precise Point Positioning Method Using Global Positioning System Measurements

Details Development of Precise Point Positioning Method Using Global Positioning System Measurements Development of Precise Point Positioning Method Using Global Positioning System Measurements

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011jass...28..217c&link_type=abstract

Journal of Astronomy and Space Sciences, Vol. 28, no. 3, pp. 217-223

Astronomy and Astrophysics

Astronomy

Global Positioning System, Precise Point Positioning, Extended Kalman Filter, Positioning Accuracy

Scientific paper

Precise point positioning (PPP) is increasingly used in several parts such as monitoring of crustal movement and maintaining an international terrestrial reference frame using global positioning system (GPS) measurements. An accuracy of PPP data processing has been increased due to the use of the more precise satellite orbit/clock products. In this study we developed PPP algorithm that utilizes data collected by a GPS receiver. The measurement error modelling including the tropospheric error and the tidal model in data processing was considered to improve the positioning accuracy. The extended Kalman filter has been also employed to estimate the state parameters such as positioning information and float ambiguities. For the verification, we compared our results to other of International GNSS Service analysis center. As a result, the mean errors of the estimated position on the East-West, North-South and Up-Down direction for the five days were 0.9 cm, 0.32 cm, and 1.14 cm in 95% confidence level.

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