Abstract
The conventional single positioning method of GPS is generally not enough accurate for precise surveying. The authors have developed a method for measuring relative coordinates between two measurement points with better accuracy than the conventional one for the single positioning method.
In this paper, a new procedure of displacement measurements using the single positioning method is proposed. The trend model is applied to the previous method for smoothing the scattered measurement results. In order to verify the proposed procedure, numerical simulations with using measurement results are demonstrated for landslide displacement measurements.