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논문 기본 정보

자료유형
학술저널
저자정보
김영국 (Department of Geoinformatic Engineering Inha University Incheon 22212 Korea; PP-Solution Inc. Seoul) 김혜인 (PP-Solution Inc. Seoul 08504 Korea) 이해창 (Department of Geoinformatic Engineering Inha University Incheon 22212 Korea) 김미소 (PP-Solution Inc. Seoul 08504 Korea) 박관동 (Department of Geoinformatic Engineering Inha University Incheon 22212 Korea; PP-Solution Inc. Seoul)
저널정보
사단법인 항법시스템학회 Journal of Positioning, Navigation, and Timing Journal of Positioning, Navigation, and Timing 제10권 제2호
발행연도
2021.1
수록면
75 - 82 (8page)

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Fields of high-precision positioning applications are growing fast across the mass market worldwide. Accordingly, the industry is focusing on developing methods of applying State-Space Representation (SSR) corrections on low-cost GNSS receivers. Among SSR correction types, this paper analyzes Safe Position Augmentation for Real Time Navigation (SPARTN) messages being offered by the SAfe and Precise CORrection DAta (SAPCORDA) company and validates positioning algorithms based on them. The first part of this paper introduces the SPARTN format in detail. Then, procedures on how to apply Basic-Precision Atmosphere Correction (BPAC) and High-Precision Atmosphere Correction (HPAC) messages are described. BPAC and HPAC messages are used for correcting satellite clock errors, satellite orbit errors, satellite signal biases and also ionospheric and tropospheric delays. Accuracies of positioning algorithms utilizing SPARTN messages were validated with two types of positioning strategies: Code-PPP using GPS pseudorange measurements and PPP-RTK including carrier phase measurements. In these performance checkups, only single-frequency measurements have been used and integer ambiguities were estimated as float numbers instead of fixed integers. The result shows that, with BPAC and HPAC corrections, the horizontal accuracy is 46% and 63% higher, respectively, compared to that obtained without application of SPARTN corrections. Also, the average horizontal and vertical RMSE values with HPAC are 17 cm and 27 cm, respectively.

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