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arXiv · 2608.17038

Terrain-Aware Local Path Planning with Global DEM Data Integration for Autonomous UGV Navigation

Devender Singh·Issah Nazif Suleiman·Paul Mitten·Glenn Cutler·Vinicius Prado da Fonseca·Matthew Hamilton
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Abstract

Autonomous navigation in complex outdoor terrains presents critical challenges for unmanned ground vehicles (UGVs) due to the inherent disconnect between global mapping and real-time sensor feedback. This work proposes a hybrid framework that integrates low-resolution Digital Elevation Model (DEM) data with real-time LiDAR-based obstacle detection and terrain analysis for efficient path planning. A global path is initially computed using a preprocessed DEM-based A* algorithm. Subsequently, local sensor data drives adaptive path correction, enabling the UGV to negotiate sudden environmental changes while maintaining safety and efficiency. Simulation results in Gazebo demonstrate significant improvements over a baseline approach, achieving a 95\% obstacle avoidance rate and reducing the average encountered slope from $8^\circ$ to $2.7^\circ$ in custom terrain. This integration enhances path efficiency and terrain traversability and supports robust real-time adaptation, paving the way for more reliable autonomous navigation in dynamic outdoor environments.

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Devender Singh, Issah Nazif Suleiman, Paul Mitten, Glenn Cutler, Vinicius Prado da Fonseca, Matthew Hamilton. 2026-08-17. Terrain-Aware Local Path Planning with Global DEM Data Integration for Autonomous UGV Navigation. https://arxiv.org/abs/2608.17038

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