Application of CORS in Landslide Monitoring

Zhao, Weihua; Zhang, M Z; Ma, JZ; Han, Bing; Ye, S Q; Huang, Zhilong

doi:10.1088/1755-1315/861/4/042049

Cited by 3 publications

(1 citation statement)

References 1 publication

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“…CORS is widely and effectively used for high accuracy real-time displacement monitoring, such as construction deformation monitoring (Xiao et al, 2019;Yu et al, 2016) and landslide monitoring (Bellone et al, 2016;Cong Khai et al, 2020;Zhao et al, 2021). It offers real-time dynamic analysis, including frequency and magnitude.…”

Section: Introductionmentioning

confidence: 99%

Crustal displacement in Vietnam using CORS data during 2018 - 2021

Dinh¹,

Nguyen

et al. 2023

Earth sci. res. j.

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Continuously Operation Reference Stations (CORS) networks provide surveying, mapping, and positioning services and play a crucial role in determining crustal displacement. This study processed the continuous Global Navigation Satellite System (GNSS) data collected from 55 CORS stations in the TAST’s CORS in Vietnam to determine the crustal displacement in Vietnam from 2018 to 2021. The processing was performed using online Precise Point Positioning (PPP) services and the displacement model to estimate the velocity of the position time series. The result showed that the horizontal velocity field of all CORS stations is uniform in magnitude and direction, ranging from 25.3 to 42.6 mm/year with accuracy from ±0.1 to ±1.0 mm/year in the south-east direction in the International Terrestrial Reference Frame 2014 (ITRF2014). This study confirms the stability and accuracy of GNSS data from the TAST’s CORS network for crustal displacement analysis.

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Section: Introductionmentioning

confidence: 99%

Crustal displacement in Vietnam using CORS data during 2018 - 2021

Dinh¹,

Nguyen

et al. 2023

Earth sci. res. j.

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Examining landslides by different geodetic deformation models: a case study on Esiroğlu-Işıklar location, Trabzon, Turkey

Kadi,

Yildirim

2023

Acta Geod Geophys

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A dual-base station constraint method to improve deformation monitoring precision consistency in strip regions

Hou,

Shi,

Ouyang

et al. 2024

Satell Navig

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The precision of deformation monitoring with Global Navigation Satellite System (GNSS) relative positioning is significantly influenced by the distance between the monitoring and base stations. In long strip regions, the considerable differences in station spacing lead to inconsistent monitoring precision among multiple stations. This presents a challenge to accurately model and predict the deformation pattern. To tackle this issue, this paper introduces a novel dual-base station constraint method. This method integrates the baseline length constraint between two base stations into the conventional relative positioning model. The formulae of the proposed method are first derived in detail. Then the data collected at eight monitoring stations in two strip regions of 6 km and 8 km over a 28-day period are used to validate the effectiveness of the proposed method. The quantitative analysis of monitoring precision consistency indicators and hypothesis testing on the correlation between monitoring precision and station spacing are conducted. The results show that: (1) median values of the East, North, and Up consistency indicators are reduced from 2.14, 1.41, and 1.83 to 0.91, 0.67, and 0.55 and from 1.85, 1.85, and 2.32 to 0.69, 1.00, and 0.87, respectively, indicating monitoring precision consistency improvement for two case studies; (2) the absolute values of the correlation coefficients between monitoring precision and station spacing decrease from 0.99, 0.94, and 0.98 to 0.09, 0.36, and 0.32. Using the t-test with a significant level of 0.01, it is demonstrated that there is no significant correlation between monitoring precision and station spacing when employing the proposed method.

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Application of CORS in Landslide Monitoring

Cited by 3 publications

References 1 publication

Crustal displacement in Vietnam using CORS data during 2018 - 2021

Crustal displacement in Vietnam using CORS data during 2018 - 2021

Examining landslides by different geodetic deformation models: a case study on Esiroğlu-Işıklar location, Trabzon, Turkey

A dual-base station constraint method to improve deformation monitoring precision consistency in strip regions

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