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Advancements in Deformation Monitoring: The Shift to Dual-Base Station Constraints
Monitoring deformation is critical for managing geological disasters, ensuring the safety of transportation systems, and maintaining engineering structures. Traditionally, the Global Navigation Satellite System (GNSS) has served as the standard for relative positioning in such monitoring activities. However, its effectiveness can be compromised over long distances between monitoring stations and base stations, leading to inconsistencies that affect the accuracy of data collected.
The variation in distances results in challenges for identifying and predicting deformation patterns, making it essential to explore advanced methodologies that can enhance precision across all monitoring stations.
A team of researchers from Wuhan University’s School of Geodesy and Geomatics, spearheaded by Junbo Shi, recently published a study on August 19, 2024, in the journal Satellite Navigation. This research introduces a dual-base station constraint methodology aimed at overcoming the limitations faced by conventional single-base GNSS approaches.
Through practical applications in two distinct case studies involving eight monitoring stations, the research showcases significant enhancements in precision consistency, marking a considerable advancement in the field of GNSS deformation monitoring.
The findings address the shortcomings associated with single-base GNSS monitoring, particularly in elongated or strip regions, where discrepancies in position accuracy are more pronounced. By integrating a baseline length constraint between two base stations into the relative positioning model, the new dual-base method effectively minimizes precision variability across different monitoring locations.
During a testing period spanning 28 days, this innovative method yielded a significant reduction in median consistency indicators across the East, North, and Up directions. Moreover, the correlation between station spacing and precision demonstrated considerable improvement, underscoring the method’s reliability in delivering consistent deformation monitoring results.
Dr. Shi emphasized the transformative potential of this dual-base method, stating, “The dual-base station constraint approach enhances GNSS deformation monitoring by ensuring uniform precision across stations, irrespective of their distance from base stations. This improvement is crucial for accurately modeling and predicting deformation patterns, which is vital for effective disaster response and infrastructure maintenance.”
The implications of the dual-base station constraint methodology are vast, with applications extending to landslide prevention, monitoring the health of structures, and managing large-scale engineering projects. By fostering uniform precision among monitoring stations, this method significantly bolsters infrastructure safety and reliability, particularly in challenging strip regions. The success of this approach not only resolves existing precision issues but also paves the way for more accurate and timely interventions in critical sectors.
More information: Cheng Hou et al., A dual-base station constraint method to improve deformation monitoring precision consistency in strip regions, Satellite Navigation (2024). DOI: 10.1186/s43020-024-00148-3
Citation: Accurate deformation monitoring—the era of dual-base station technology (2024, August 23) retrieved 23 August 2024 from https://phys.org/news/2024-08-accurate-deformation-era-dual-base.html
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