Enhanced Single Station PPP-RTK Using CNES SSR Corrections

Yu-Sheng Yang and Shau-Shiun Jan

Peer Reviewed

Abstract:	The primary goal of this research is to develop an algorithm based on the concept of single-station augmented precise point positioning–real-time kinematic (PPP-RTK) to address the challenges posed by insufficient reference stations or limited satellite constellations provided by reference stations. This algorithm utilizes undifferenced and uncombined (UDUC) GNSS observations, integrated with global State Space Representation (SSR) corrections and regional atmospheric corrections. In a static experiment conducted under a fixed PPPRTK scenario, the algorithm demonstrated excellent performance after convergence, achieving root-mean-square errors (RMSE) of 0.59 cm, 2.16 cm, and 2.98 cm in the east, north, and up directions, respectively. The fixed rate, representing the percentage of epochs with successfully resolved integer ambiguities, reached approximately 85%. In dynamic experiments, the RMSEs in the east, north, and up directions were 10.45 cm, 16.79 cm, and 20.51 cm, respectively, with a fixed rate of 65%. Keywords—PPP-RTK, single-station, SSR, CNES, atmospheric corrections
Published in:	2025 IEEE/ION Position, Location and Navigation Symposium (PLANS) April 28 - 1, 2025 Salt Lake Marriott Downtown at City Creek Salt Lake City, UT
Pages:	481 - 485
Cite this article:	Yang, Yu-Sheng, Jan, Shau-Shiun, "Enhanced Single Station PPP-RTK Using CNES SSR Corrections," 2025 IEEE/ION Position, Location and Navigation Symposium (PLANS), Salt Lake City, UT, April 2025, pp. 481-485.
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