Project Overview
In collaboration with the National Highways Authority of India (NHAI), ASTROC AS TECH deployed survey-grade Unmanned Aerial Systems (UAS) to conduct high-precision aerial mapping and 3D modeling of national highway networks. The project focused on digitizing highway infrastructure, monitoring construction progress, and facilitating maintenance planning.
Point cloud rendering of highway intersection
The Challenge
Traditional ground surveying methods for highway infrastructure are time-consuming, labor-intensive, and pose safety risks to surveying personnel operating near high-speed active traffic. NHAI required a rapid, safe, and highly accurate method to acquire topographical data, measure earthworks, and monitor the structural health of bridges and overpasses.
The Solution and Results
ASTROC utilized the multi-rotor mapping platforms equipped with RTK (Real-Time Kinematic) GNSS and 45-megapixel full-frame mapping sensors. Operating under specialized BVLOS permissions, the drones captured high-resolution imagery with a Ground Sample Distance (GSD) of 1.5 cm/pixel.
The captured data was processed using photogrammetry software within the ASTROC Data Analytics Platform to generate dense 3D point clouds, Digital Elevation Models (DEM), and orthomosaics. This enabled NHAI engineers to accurately calculate volumetric earthworks, analyze slope stability, and inspect pavement conditions remotely.