Abstract
A new method using GPS is proposed for dynamic displacement monitoring. The method is characterized by a three-dimensional dynamic displacement that can be measured with high accuracy. It is based on a carrier phase observation technique, like GPS relative positioning, and takes a time differential carrier phase, while it requires only one sensor as in GPS single positioning. Thus, it is called self-relative single positioning. This paper describes the formulation of the method, the experiment results for investigating the ability of the newly developed sensor, and a practical application of the method to monitoring a floating pier. The proposed method uses a new sensor that can monitor dynamic displacements of more than 5 mm of amplitude and less than 2 Hz of frequency.
