Developing surveying technology using drones for river disaster area survey and disaster recovery support

Abstract

A drone equipped with a scanner that emits green laser that penetrates underwater has been put into practical use, and it is expected that it will be used to improve the efficiency and sophistication of river management using 3D data. This study focused on the application of this river management to survey of damaged areas or disaster recovery, and examined effective ways to use drone surveying. Specifically, we will verify the accuracy of surveying when carried out without adjustment points, and also establish a process to quickly detect locations where deformations occur from survey data obtained before and after the flood, and quantify their magnitude due to developed algorithm. This paper describes on the application of drone surveying that meets the required accuracy for use in disaster response along with examples.