What question did this study set out to answer?

Determine the efficacy of high sampling rate GPS and RTS measurements for estimating the damping ratio of structures.

March 26, 2026Open Access

Estimation of the Damping Ratio Using High Sampling Rate GPS and RTS Measurements

Key Points

Determine the efficacy of high sampling rate GPS and RTS measurements for estimating the damping ratio of structures.
Used high sampling rate GPS and RTS measurements from buildings and masonry arches.
Applied logarithmic decrement, frequency response, and spectral response methods.
Compared costs, time, and calculation codes across methods.
Identified suitable methods for damping ratio estimation using GPS and RTS.
Evaluated the effectiveness of the high sampling rate GPS and RTS in various case studies.

Abstract

“High sampling rate” GPS/GNSS (Global Positioning System/Global Navigation Satellite System) and RTS (Robotic Total Station) measurements were used to extract the vibration functions of, respectively, ca. thirty buildings hosting permanent GPS stations and the ties of four masonry arches of a church. The logarithmic decrement, frequency response, frequency domain decomposition and spectral response methods were applied to the measurements to estimate the damping ratio ζ. The methods’ costs, times, calculation codes and application to the case studies were compared to evaluate whether “high sampling rate” GPS and RTS are suitable for estimation of the damping ratio ζof a building or a tie.

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