Home Faculty Surveying and Geomatics

 
Lai, Yen-Ru  Assistant ProfessorSurveying and Geomatics
Title
Assistant Professor
TEL
(04) 2284-0437 ext. 401
E-Mail
Office
Room 401, Concrete Technology Research Center
Record
Ph.D.,Ohio State University, USA.
Web site
 
Experience
Assistant Professor, Dept. Civil Engineering, National Chung Hsing University, Taiwan (2024/2~)
Research Areas
Geodesy
GNSS
Awards
Courses
  1. 上學期
  2. Remote Sensing
  3. Credit:3
  4. Class:Master
  1. 上學期
  2. Analytical Photogrammetry
  3. Credit:3
  4. Class:Master
Selected Publications
● Referred Papers 
1.
Lai, Y.R.*, & Wang, L., “Monthly Surface Elevation Changes of the Greenland Ice Sheet from ICESat-1, CryoSat-2, and ICESat-2 Altimetry Missions.,” IEEE Geoscience and Remote Sensing Letters, vol. 19, pp. 1-5, doi.10.1109/LGRS.2021.3058956, 2022. (SCI)
2.
Lai, Y.R., Wang, L.*, Bevis, M., Fok, H.S., & Alanazi, A., “Truncated singular value decomposition regularization for estimating terrestrial water storage changes using GPS: a case study over Taiwan.,” Remote Sensing, vol. 12, no. 23, pp. 3861, doi.org/10.3390/rs12233861, 2020. (SCI)
3.
Hsu, Y.J.*, Lai, Y.R., You, R.J., Chen, H.Y., Teng, L.S., Tsai, Y.C., Tang, C.H., & Su, H.H, “Detecting rock uplift across southern Taiwan mountain belt by integrated GPS and leveling data,” Tectonophysics, vol. 744, no. 275-284, doi.org/10.1016/j.tecto.2018.07.012, 2018. (SCI)
4.
Lai, Y.R.*, “Precision and Accuracy Evaluation of Historical and Modern Satellite Radar and Laser Altimeter Data over Continental Ice Sheets,” In preparation.
5.
Lai, Y.R.*, Chang, A.T., You, R.J. et al., “Secular Vertical Velocity Field over Taiwan (1998-2023) Derived from Integrated GNSS and Geodetic Leveling Data,” In preparation.
6.
Lai, Y.R.*, You, R.J., Chang, A.T. et al., “Variance and Covariance Estimation in the Readjustment of the Taiwan Geodetic Leveling Network,” In preparation.
7.
Lai, Y.R.* et al., “Enhancing Multi-Baseline Ambiguity Resolution for Moving Platforms with UWB-Based Inter-Vehicle Constraints,” In preparation.
8.
Lai, Y.R.* et al., “Optimizing Ambiguity Resolution under Constraints for a Moving Vehicle,” In preparation.
9.
Lai, Y.R.*, “Spatiotemporal Penetration Effects in CryoSat-2 Radar Altimetry across the Greenland and Antarctic Ice Sheets,” In preparation.
10.
Lai, Y.R.* et al., “Time-Varying Short-Term and Seasonal Changes in Terrestrial Water Storage across the Contiguous United States Derived from GNSS, GRACE, and Hydrological Models,” In preparation.
11.
Lai, Y.R.*, “High-Resolution DEM of Greenland and Antarctica from ICESat-2 ATL06/Version6 Dataset,” In preparation.
12.
Lai, Y.R.*, “Tracking Monthly Surface Elevation Changes of the Antarctic Ice Sheet (1992-2024) from Multiple Satellite Radar and Laser Altimetry Missions,” In preparation.
● Seminar Papers 
1.
Yen-Ru Lai and Ching-Mei Tseng, “Discrepancies in Water Storage Trends from GRACE and LDAS Models Across U.S. River Basins: Implications for Climate Monitoring,” 2025 Fall Meeting, American Geophysical Union (AGU), 12 2025. Online and New Orleans, Louisiana, U.S.A.,
2.
Lai, Y.R., Kao, S.P., Lai, C.M., Chen, H.C., Ke, W.L., Chiang, Y.H., Syu, M.E., Chang, A.T. & Tseng. C.M., “Evaluation of Network RTK and Post-Processed Loosely and Tightly Coupled GNSS/IMU Solutions in Vehicle Dynamics (Submitted),” IEEE International Conference on Recent Advances in Systems Science and Engineering (IEEE RASSE 2025), 11 2025. Singapore,
3.
Lai, Y.R., Wang, L., & Alanazi, A., “On the inversion of Terrestrial Water Storage Variations over the United States using GNSS: Resolution and Bias,” 2022 Fall Meeting, American Geophysical Union (AGU), no. G52A-05, 2022. Online and Chicago, IL, U.S.A.,
4.
Lai, Y.R., & Wang, L., “Time-varying Surface Elevation Changes at Major Glaciers of Greenland Ice Sheet by Integrating Multiple Satellite Radar and Laser Altimetry Data Sets,” 2022 Fall Meeting, American Geophysical Union (AGU), no. G25C-0227, 2022. Online and Chicago, IL, U.S.A.,
5.
Lai, Y.R., & Wang, L., “Assessing inter-mission biases between ICESat-2 and CryoSat-2 missions over the Greenland and Antarctic ice sheets,” 2021 Fall Meeting, American Geophysical Union (AGU), no. C55A-0558, 2021. Online and New Orleans, Louisiana, U.S.A.,
6.
Lai, Y.R., & Wang, L., “Monthly Surface Elevation Changes over the Greenland Ice Sheet from 2003 to 2020 by Merging Multi-Mission Observations,” 2020 Fall Meeting, American Geophysical Union (AGU), no. C028-0015, 2020. Online,
7.
Lai, Y.R., Wang, L., Bevis, M., & Hsu, Y.J., “Estimate GPS-inferred Terrestrial Water Storage Variations in Taiwan with Two Inversion Strategies: Tikhonov Regularization and Truncated Singular Value Decomposition,” 2019 Fall Meeting, American Geophysical Union (AGU), no. 23099-268912, 2019. New Orleans, Louisiana, U.S.A.,
8.
Lai, Y.R., Hsu, Y.J., & You R.J., “Integrating Continuous GPS Time Series and Geodetic Leveling Data to Estimate Secular Vertical Velocity of Taiwan,” 2017 Fall Meeting, American Geophysical Union (AGU), no. 23099-268912, 2017. New Orleans, Louisiana, U.S.A.,
9.
Lai, Y.R., Wang T.T., Huang T.H., & You R.J., “Multi-scale and Temporal-stage Integrated Survey Technology for Site Displacement and Deformation Monitoring in Geotechnical Engineering,” IAG symposia, 26th IUGG General Assembly, 2015. Prague, Czech Republic,
Research Project
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