Determinación de patrones de escurrimiento superficial en carreteras de pavimento rígido con el uso deUAV

Abstract

Abstract: The objective of the present investigation is to analyze the direction water flow on the rigid pavement by means of UAV. Procedures included a photogrammetric survey, point cloud generation, georeferencing, creation of orthophotos and digital terrain models, as well as their rasterization, to ultimately utilize a Geographic Information System and determine the flow direction within the desired area. Smaller cell sizes were found to be more sensitive to point cloud noise when calculating flow differences. Results of this study indicate that the error obtained in the heights of the study profiles measured in the field and those carried out using the UAV give an average absolute error result of 0.03 m with a standard deviation of 0.04 m. This error was calculated by the difference between the heights both in the field and those obtained from the GIS. The mean square error (RMSE) of these two measurements was also determined, resulting in a value of 0.05 m. After analyzing both the field-obtained profile data and the UAV-obtained profile data, as well as a comparison of the two, it was determined that the two measurements are similar and the error generated is at the level of centimeters. Ultimately, this demonstrates that the use UAV is suitable for determining runoff patterns on rigid pavement.