LIDAR Obstacle Warning and Avoidance System for Unmanned Aircraft
The availability of powerful eye-safe laser sources and the recent advancements in electro-optical and mechanical beam-steering components have allowed laser-based Light Detection and Ranging (LIDAR) to become a promising technology for obstacle warning and avoidance in a variety of manned and unmanned aircraft applications. LIDAR outstanding angular resolution and accuracy characteristics are coupled to its good detection performance in a wide range of incidence angles and weather conditions, providing an ideal obstacle avoidance solution, which is especially attractive in low-level flying platforms such as helicopters and small-to-medium size Unmanned Aircraft (UA). The Laser Obstacle Avoidance Marconi (LOAM) system is one of such systems, which was jointly developed and tested by SELEX-ES and the Italian Air Force Research and Flight Test Centre. The system was originally conceived for military rotorcraft platforms and, in this paper, we briefly review the previous work and discuss in more details some of the key development activities required for integration of LOAM on UA platforms. The main hardware and software design features of this LOAM variant are presented, including a brief description of the system interfaces and sensor characteristics, together with the system performance models and data processing algorithms for obstacle detection, classification and avoidance. In particular, the paper focuses on the algorithm proposed for optimal avoidance trajectory generation in UA applications.
Keywords: Lidar, sense and avoid, Unmanned Aircraft, obstacle avoidance, obstacle detection, Low-Level Flight, Nap-of-the-Earth Flight, Near Infra-Red, Obstacle Warning System, Trajectory Optimisation
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1091998Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 6577
 C. B. Kellington, "An Optical Radar System for Obstacle Avoidance and Terrain Following”, AGARDCP-148,NATO Science and Technology Organization Ed., 1965.
 B. Goldstein and G. Dalrymple, "GaAs Injection Laser Radar”,in Proc. of the IEEE,Vol. 55 No. 2,1967.
 G. Hogg, K. Harrison, and S. Minisclou, "The Anglo-French Compact Laser Radar Demonstrator Programme”, AGARDCP-563, NATO Science and Technology Organization Ed., 1995.
 W. Büchtemann, and M. Eibert, "Laser Based Obstacle Warning Sensors for Helicopters”, AGARD CP-563, NATO Science and Technology Organization Ed., 1995.
 S.L. Holder, and R.G. Branigan, "Development and Flight Testing of an Obstacle Avaoidance System for the U.S. Army Helicopters”, AGARDCP-563, NATO Science and Technology Organization Ed., 1995.
 R. Sabatini, M.A. Richardsom andE. Roviaro, "Development and Flight Test of an Avionics LIDAR for Helicopter and UAV Low-Level Flight”, Journal of Aeronautics &Aerospace Engineering, Vol.2, No.3, 2013.
 R. Sabatini, F. Guercio and S. Vignola, "Tactical Laser Systems Performance Analysis and Mission Management”,RTO-MP-046 -Advanced Mission Management and System Integration Technologies for Improved Tactical Operations, NATO Science and Technology Organization Ed.,2000.
 R. Sabatini, and M.A. Richardson, "Airborne Laser Systems Testing and Analysis”, RTO-AG-160, AGARDograph Series, Vol. 26, NATO Research and Technology Organization (RTO) – Systems Concepts and Integration Panel (SCI), 2010.
 R. Sabatini, M.A. Richardson, H. Jia, and D. Zammit-Mangion, "Airborne Laser Systems for Atmospheric Sounding in the Near Infrared”, in Proc. of the SPIE Photonics Europe 2012 Conference, Brussels, Belgium, 2012.
 R. Sabatini and M.A. Richardson, "New Techniques for Laser Beam Atmospheric Extinction Measurements from Manned and Unmanned Aerospace Vehicles”, Central European Journal of Engineering, Vol. 3, Iss.1, pp. 11-35, 2012.
 R. Sabatini and M.A. Richardson, "Novel Atmospheric Extinction Measurement Techniques for Aerospace Laser System Applications”, Infrared Physics & Technology, Vol. 56, pp. 30-50, 2013.
 L. Rodriguez Salazar, R. Sabatini, S. Ramasamy and A. Gardi, "A Novel System for Non-Cooperative UAV Sense-And-Avoid”, in Proc. of the European Navigation Conference 2013 (ENC 2013), Vienna, Austria, 2013.
 R. Sabatini, S. Ramasamy, A. Gardi and L. Rodriguez Salazar, "Low-cost Sensors Data Fusion for Small Size Unmanned Aerial Vehicles Navigation and Guidance”, International Journal of Unmanned Systems Engineering, Vol. 1, No. 3, pp. 16-47, 2013.
 R. Sabatini, M.A. Richardson, C. Bartel, A. Kaharkar, T. Shaid, L. Rodriguez and A. Gardi, "A Low-cost Vision Based Navigation System for Small Size Unmanned Aerial Vehicle Applications”, Journal of Aeronautics and Aerospace Engineering, Vol. 2, No. 3, 2013.
 S. Ramasamy, R. Sabatini, A. Gardi, Y. Liu, "Novel Flight Management System for Real-Time 4-Dimensional Trajectory Based Operations”, in Proc. of the AIAA Guidance, Navigation & Control (GNC) Conference 2013, Boston, Massachusetts, USA, 2013.
 S. Ramasamy, R. Sabatini, Y. Liu, A. Gardi, L. Rodriguez Salazar. "A Novel Flight Management System for SESAR Intent Based Operations”, in Proc. of the European Navigation Conference 2013 (ENC 2013), Vienna, Austria, 2013.
 A. Gardi, R. Sabatini, S. Ramasamy, K. de Ridder, "4-Dimensional Trajectory Negotiation and Validation System for the Next Generation Air Traffic Management”, in Proc. of the AIAA Guidance, Navigation & Control (GNC) Conference 2013, Boston, Massachusetts, USA, 2013.
 A. Gardi, R. Sabatini, K. De Ridder, S. Ramasamy. L. Rodriguez Salazar. "Automated Intent Negotiation and Validation System for 4-Dimensional Trajectory Based Operations”, in Proc. of the European Navigation Conference 2013 (ENC 2013), Vienna, Austria, 2013.