High-rate Single-Frequency Precise Point Positioning (SF-PPP) in the detection of structural displacements and ground motions
This study presents the usability of the high-rate single-frequency Precise Point Positioning (SF-PPP) technique based on 20 Hz Global Positioning Systems (GPS)-only observations in detecting dynamic motions. SF-PPP solutions were obtained from post-mission and real-time GNSS corrections. These incl...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Korea Advanced Institute of Science and Technology
2024
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| Online Access: | http://hdl.handle.net/20.500.11937/94594 |
| _version_ | 1848765883671904256 |
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| author | Bezcioglu, Mert Yigit, Cemal Dindar, Ahmet El-Mowafy, Ahmed Wang, Kan |
| author_facet | Bezcioglu, Mert Yigit, Cemal Dindar, Ahmet El-Mowafy, Ahmed Wang, Kan |
| author_sort | Bezcioglu, Mert |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This study presents the usability of the high-rate single-frequency Precise Point Positioning (SF-PPP) technique based on 20 Hz Global Positioning Systems (GPS)-only observations in detecting dynamic motions. SF-PPP solutions were obtained from post-mission and real-time GNSS corrections. These include the International GNSS Service (IGS)-Final, IGS real-time (RT), real-time MADOCA (Multi-GNSS Advanced Demonstration tool for Orbit and Clock Analysis), and real-time products from the Australian/New Zealand satellite-based augmentation systems (SBAS, known as SouthPAN). SF-PPP results were compared with LVDT (Linear Variable Differential Transformer) sensor and single-frequency relative positioning (SF-RP) solutions. The findings show that the SF-PPP technique successfully detects the harmonic motions, and the real-time products-based PPP solutions were as accurate as the final post-mission products. In the frequency domain, all GNSS-based methods evaluated in this contribution correctly detect the dominant frequency of short-term harmonic oscillations, while the differences in the amplitude values corresponding to the peak frequency do not exceed 1.1 mm. However, evaluations in the time domain show that SF-PPP needs high-pass filtering to detect accurate displacement since SF-PPP solutions include trends and low-frequency fluctuations, mainly due to atmospheric effects. Findings obtained in the time domain indicate that final, real-time, and MADOCA-based PPP results capture short-term dynamic behaviors with an accuracy ranging from 3.4 mm to 8.5 mm, and SBAS-based PPP solutions have several times higher RMSE values compared to other methods. However, after high-pass filtering, the accuracies obtained from PPP methods decreased to a few mm. The outcomes demonstrate the potential of the high-rate SF-PPP method to reliably monitor structural and earthquake-induced ground motions and vibration frequencies of structures. |
| first_indexed | 2025-11-14T11:42:20Z |
| format | Journal Article |
| id | curtin-20.500.11937-94594 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:42:20Z |
| publishDate | 2024 |
| publisher | Korea Advanced Institute of Science and Technology |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-945942024-04-22T02:41:03Z High-rate Single-Frequency Precise Point Positioning (SF-PPP) in the detection of structural displacements and ground motions Bezcioglu, Mert Yigit, Cemal Dindar, Ahmet El-Mowafy, Ahmed Wang, Kan precise point positioning real-time PPP SBAS This study presents the usability of the high-rate single-frequency Precise Point Positioning (SF-PPP) technique based on 20 Hz Global Positioning Systems (GPS)-only observations in detecting dynamic motions. SF-PPP solutions were obtained from post-mission and real-time GNSS corrections. These include the International GNSS Service (IGS)-Final, IGS real-time (RT), real-time MADOCA (Multi-GNSS Advanced Demonstration tool for Orbit and Clock Analysis), and real-time products from the Australian/New Zealand satellite-based augmentation systems (SBAS, known as SouthPAN). SF-PPP results were compared with LVDT (Linear Variable Differential Transformer) sensor and single-frequency relative positioning (SF-RP) solutions. The findings show that the SF-PPP technique successfully detects the harmonic motions, and the real-time products-based PPP solutions were as accurate as the final post-mission products. In the frequency domain, all GNSS-based methods evaluated in this contribution correctly detect the dominant frequency of short-term harmonic oscillations, while the differences in the amplitude values corresponding to the peak frequency do not exceed 1.1 mm. However, evaluations in the time domain show that SF-PPP needs high-pass filtering to detect accurate displacement since SF-PPP solutions include trends and low-frequency fluctuations, mainly due to atmospheric effects. Findings obtained in the time domain indicate that final, real-time, and MADOCA-based PPP results capture short-term dynamic behaviors with an accuracy ranging from 3.4 mm to 8.5 mm, and SBAS-based PPP solutions have several times higher RMSE values compared to other methods. However, after high-pass filtering, the accuracies obtained from PPP methods decreased to a few mm. The outcomes demonstrate the potential of the high-rate SF-PPP method to reliably monitor structural and earthquake-induced ground motions and vibration frequencies of structures. 2024 Journal Article http://hdl.handle.net/20.500.11937/94594 10.12989/sem.2024.89.6.589 Korea Advanced Institute of Science and Technology restricted |
| spellingShingle | precise point positioning real-time PPP SBAS Bezcioglu, Mert Yigit, Cemal Dindar, Ahmet El-Mowafy, Ahmed Wang, Kan High-rate Single-Frequency Precise Point Positioning (SF-PPP) in the detection of structural displacements and ground motions |
| title | High-rate Single-Frequency Precise Point Positioning (SF-PPP) in the detection of structural displacements and ground motions |
| title_full | High-rate Single-Frequency Precise Point Positioning (SF-PPP) in the detection of structural displacements and ground motions |
| title_fullStr | High-rate Single-Frequency Precise Point Positioning (SF-PPP) in the detection of structural displacements and ground motions |
| title_full_unstemmed | High-rate Single-Frequency Precise Point Positioning (SF-PPP) in the detection of structural displacements and ground motions |
| title_short | High-rate Single-Frequency Precise Point Positioning (SF-PPP) in the detection of structural displacements and ground motions |
| title_sort | high-rate single-frequency precise point positioning (sf-ppp) in the detection of structural displacements and ground motions |
| topic | precise point positioning real-time PPP SBAS |
| url | http://hdl.handle.net/20.500.11937/94594 |