Uploaded March 2026 | Updated September 2026, 3 weeks ago
Autonomous robotic systems are increasingly deployed for mapping, monitoring, and inspection in complex and unstructured environments. However, most existing path planning approaches remain domain-specific (i.e., either on air, land, or sea), limiting their scalability and cross-platform applicability. This article presents OmniPlanner, a unified planning framework for autonomous exploration and inspection across aerial, ground, and underwater robots. The method integrates volumetric exploration and viewpoint-based inspection, alongside target reach behaviors within a single modular architecture, complemented by a platform abstraction layer that captures morphology-specific sensing, traversability and motion constraints. This enables the same planning strategy to generalize across distinct mobility domains with minimal retuning. The framework is validated through extensive simulation studies and field deployments in underground mines, industrial facilities, forests, submarine bunkers, and structured outdoor environments. Across these diverse scenarios, OmniPlanner demonstrates robust performance, consistent cross-domain generalization, and improved exploration and inspection efficiency compared to representative state-of-the-art baselines.
Autonomous robotic systems are increasingly deployed for mapping, monitoring, and inspection in complex and unstructured environments. However, most existing path planning approaches remain domain-specific (i.e., either on air, land, or sea), limiting their scalability and cross-platform applicability. This article presents OmniPlanner, a unified planning framework for autonomous exploration and inspection across aerial, ground, and underwater robots. The method integrates volumetric exploration and viewpoint-based inspection, alongside target reach behaviors within a single modular architecture, complemented by a platform abstraction layer that captures morphology-specific sensing, traversability and motion constraints. This enables the same planning strategy to generalize across distinct mobility domains with minimal retuning. The framework is validated through extensive simulation studies and field deployments in underground mines, industrial facilities, forests, submarine bunkers, and structured outdoor environments. Across these diverse scenarios, OmniPlanner demonstrates robust performance, consistent cross-domain generalization, and improved exploration and inspection efficiency compared to representative state-of-the-art baselines.
![DARPA SubT Urban Circuit: Autonomous Exploration in the Satsop Abandoned Power Plant
In this video, a mission of the Alpha Aerial Scout of Team CERBERUS during the DARPA Subterranean Challenge Urban Circuit event is presented. The Alpha Robot operates inside the Satsop Abandoned Power Plant and performs autonomous exploration. The robot autonomy relies on a resilient multi-modal localization and mapping solution fusing LiDAR, vision and inertial sensing, combined with a graph-based exploration path planner responsible to identify optimized viewpoints to explore the unknown setting in a collision-free manner. The same planner is futher responsible for the automated return-to-home behavior of the robot.
This deployment took place during the 3rd field trial of team CERBERUS during the Urban Circuit event of the DARPA Subterranean Challenge. The Urban Circuit contained the Alpha and Beta courses (name not to be confused with that of the robot which is also called Alpha). This test is in the Alpha course. Team CERBERUS deploys a combination of legged, flying and roving robotic systems.
Most Relevant Papers:
[1] T. Dang, F. Mascarich, S. Khattak, C. Papachristos, K. Alexis, Graph-based Path Planning for Autonomous Robotic Exploration in Subterranean Environments, IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2019, Macau, China
[2] S. Khattak, D. H. Nguyen, F. Mascarich, T. Dang, and K. Alexis, Complementary Multi–Modal Sensor Fusion for Resilient Robot Pose Estimation in Subterranean Environments, International Conference on Unmanned Aircraft Systems (ICUAS), Athens, Greece, 2020
[3] T. Dang, S. Khattak, F. Mascarich, K. Alexis, Explore Locally, Plan Globally: A Path Planning Framework for Autonomous Robotic Exploration in Subterranean Environments, 19th International Conference on Advanced Robotics (ICAR), Belo Horizonte - Brazil, December 2-6, 2019 (Best Paper Award)
Find out more at:
https://www.autonomousrobotslab.com/ DARPA SubT Urban Circuit: Autonomous Exploration in the Satsop Abandoned Power Plant](https://i.ytimg.com/vi/Idmq_5hhMic/mqdefault.jpg)









