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Proceedings Paper

A super-resolution algorithm for enhancement of flash lidar data
Author(s): Alexander Bulyshev; Michael Vanek; Farzin Amzajerdian; Diego Pierrottet; Glenn Hines; Robert Reisse
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Paper Abstract

A novel method for enhancement of the spatial resolution of 3-diminsional Flash Lidar images is being proposed for generation of elevation maps of terrain from a moving platform. NASA recognizes the Flash LIDAR technology as an important tool for enabling safe and precision landing in future unmanned and crewed lunar and planetary missions. The ability of the Flash LIDAR to generate 3-dimensional maps of the landing site area during the final stages of the descent phase for detection of hazardous terrain features such as craters, rocks, and steep slopes is under study in the frame of the Autonomous Landing and Hazard Avoidance (ALHAT) project. Since single frames of existing FLASH LIDAR systems are not sufficient to build a map of entire landing site with acceptable spatial resolution and precision, a super-resolution approach utilizing multiple frames has been developed to overcome the instrument's limitations. Performance of the super-resolution algorithm has been analyzed through a series of simulation runs obtained from a high fidelity Flash LIDAR model and a high resolution synthetic lunar elevation map. For each simulation run, a sequence of FLASH LIDAR frames are recorded and processed as the spacecraft descends toward the landing site. Simulations runs having different trajectory profiles and varying LIDAR look angles of the terrain are also analyzed. The results show that adequate levels of accuracy and precision are achieved for detecting hazardous terrain features and identifying safe areas of the landing site.

Paper Details

Date Published: 7 February 2011
PDF: 7 pages
Proc. SPIE 7873, Computational Imaging IX, 78730F (7 February 2011); doi: 10.1117/12.876283
Show Author Affiliations
Alexander Bulyshev, Analytical Mechanics Associates, Inc. (United States)
Michael Vanek, NASA Langley Research Ctr. (United States)
Farzin Amzajerdian, NASA Langley Research Ctr. (United States)
Diego Pierrottet, Coherent Applications, Inc. (United States)
Glenn Hines, NASA Langley Research Ctr. (United States)
Robert Reisse, NASA Langley Research Ctr. (United States)

Published in SPIE Proceedings Vol. 7873:
Computational Imaging IX
Charles A. Bouman; Ilya Pollak; Patrick J. Wolfe, Editor(s)

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