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Sensors 2017, 17(6), 1347; doi:10.3390/s17061347

Development and Positioning Accuracy Assessment of Single-Frequency Precise Point Positioning Algorithms by Combining GPS Code-Pseudorange Measurements with Real-Time SSR Corrections

1
PPSoln Inc., 606 Seobusaet-gil #A-2409, Seoul 08504, Korea
2
WCSL (World Class Smart Lab) of intelligent vehicle Inha research Lab, Department of Geoinformatic Engineering, Inha University, 100 Inha-ro, Incheon 22212, Korea
*
Author to whom correspondence should be addressed.
Received: 2 May 2017 / Revised: 29 May 2017 / Accepted: 8 June 2017 / Published: 9 June 2017
(This article belongs to the Section Remote Sensors)
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Abstract

We have developed a suite of real-time precise point positioning programs to process GPS pseudorange observables, and validated their performance through static and kinematic positioning tests. To correct inaccurate broadcast orbits and clocks, and account for signal delays occurring from the ionosphere and troposphere, we applied State Space Representation (SSR) error corrections provided by the Seoul Broadcasting System (SBS) in South Korea. Site displacements due to solid earth tide loading are also considered for the purpose of improving the positioning accuracy, particularly in the height direction. When the developed algorithm was tested under static positioning, Kalman-filtered solutions produced a root-mean-square error (RMSE) of 0.32 and 0.40 m in the horizontal and vertical directions, respectively. For the moving platform, the RMSE was found to be 0.53 and 0.69 m in the horizontal and vertical directions. View Full-Text
Keywords: GPS; PPP; SSR; pseudorange; navigation GPS; PPP; SSR; pseudorange; navigation
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Kim, M.; Park, K.-D. Development and Positioning Accuracy Assessment of Single-Frequency Precise Point Positioning Algorithms by Combining GPS Code-Pseudorange Measurements with Real-Time SSR Corrections. Sensors 2017, 17, 1347.

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