Application of Unmanned Aerial Vehicles for Highway Surveying in Case Study Highway No. 3574, Map Pu Intersection, Chonburi Province

Abstract

This article presents the application of Unmanned Aerial Vehicles (UAV) for highway surveying in case study highway No. 3574, Map Pu Intersection, Chonburi Province. Distance of about 5 km., flying along the highway and expanding the area to the side. The purpose is to analyze the location and number of ground control points that are suitable for highway works and to verify the positional accuracy of the obtained spatial data. In this study, the image has a pixel value of 4.11 cm., with 85% of the overlap and 75% of the side-lap flight time 4 flight and project take 987 images, 17 ground control points, 20 check points, by separately surveying 3 types of ground control points to evaluate the accuracy of the check points. The result is a survey of the ground control point divided into blocks, 1 km. each, 5 control points, 500 m. distance between points, giving the best of RMSE value of the check point, is the error of marking the ground control point, RMSE x of 0.37 mm., y of 0.42 mm. and z of 0.80 mm. The mean projection error is 0.095 pixel, the RMSE of the position of the check point is x of 5.43. cm., y of 5.25 cm. and z of 6.56 cm. which conforms to the Engineering UAV Survey Standard. and obtained Ortho-photo map and Digital Surface Model data.