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Issue No. 04 - July-Aug. (2014 vol. 34)
ISSN: 0272-1716
pp: 52-62
Iain Martin , University of Dundee
Steve Parkes , University of Dundee
Martin Dunstan , University of Dundee
Nick Rowell , University of Dundee
Spacecraft exploration of asteroids presents autonomous-navigation challenges that can be aided by virtual models to test and develop guidance and hazard-avoidance systems. Researchers have extended and applied graphics techniques to create high-resolution asteroid models to simulate cameras and other spacecraft sensors approaching and descending toward asteroids. A scalable model structure with evenly spaced vertices simplifies terrain modeling, avoids distortion at the poles, and enables triangle-strip definition for efficient rendering. To create the base asteroid models, this approach uses two-phase Poisson faulting and Perlin noise. It creates realistic asteroid surfaces by adding both crater models adapted from lunar terrain simulation and multiresolution boulders. The researchers evaluated the virtual asteroids by comparing them with real asteroid images, examining the slope distributions, and applying a surface-relative feature-tracking algorithm to the models.
Adaptation models, Space vehicles, Rendering (computer graphics), Space research, Rough surfaces, Surface roughness, Moon, Asteroids, Unmanned aerial vehicles,visualization, terrain modeling, fractal, terrain-relative navigation, vision guidance, computer graphics, graphics
Iain Martin, Steve Parkes, Martin Dunstan, Nick Rowell, "Asteroid Modeling for Testing Spacecraft Approach and Landing", IEEE Computer Graphics and Applications, vol. 34, no. , pp. 52-62, July-Aug. 2014, doi:10.1109/MCG.2014.22
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