Abstract
Synthetic aperture radar (SAR) imaging is commonly used to monitor civil engineering structures and analyze various phenomena in mountainous areas. Interferometric SAR (InSAR) results need to be corrected using global navigation satellite system (GNSS) based control station data to estimate the displacement of reinforced slopes. In this study, the suitability of the interpolation method for GNSS Earth Observation Network System (GEONET) data was evaluated using field survey results. Interpolation was performed using the Green's function for six different spline methods, and the accuracy was determined by comparison to geographical coordinates from virtual reference station real-time kinematic global navigation satellite system (VRS RTK-GNSS) surveying at three test sites in Chiba Prefecture, Japan. We conclude that Green's function for spline is a useful method of interpolating GEONET elevation data, and that the most accurate spline method was the continuous curvature spline in tension for a spherical surface.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
