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Please use this identifier to cite or link to this item: http://hdl.handle.net/2014/39314

Title: Vision guided landing of an an autonomous helicopter in hazardous terrain.
Authors: Johnson, Andrew E.
Montgomery, Jim
Keywords: autonomous landing
hazard detection
structure from motion
Mars Landing
velocity estimation
feature tracking
Mars Exploration Rover (MER)
UAV
Issue Date: 18-Apr-2005
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2005.
Citation: International Conference on Robotics and Automation, Barcelona, Spain, April 18-22, 2005.
Abstract: Future robotic space missions will employ a precision soft-landing capability that will enable exploration of previously inaccessible sites that have strong scientific significance. To enable this capability, a fully autonomous onboard system that identifies and avoids hazardous features such as steep slopes and large rocks is required. Such a system will also provide greater functionality in unstructured terrain to unmanned aerial vehicles. This paper describes an algorithm for landing hazard avoidance based on images from a single moving camera. The core of the algorithm is an efficient application of structure from motion to generate a dense elevation map of the landing area. Hazards are then detected in this map and a safe landing site is selected. The algorithm has been implemented on an autonomous helicopter testbed and demonstrated four times resulting in the first autonomous landing of an unmanned helicopter in unknown and hazardous terrain.
URI: http://hdl.handle.net/2014/39314
Appears in Collections:JPL TRS 1992+

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