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Accurate autonomous navigation capabilities are essential for future lunar robotic landing missions with a pin-point landing requirement, since in the absence of direct line of sight to ground control during critical approach and landing phases, or when facing long signal delays the herein before mentioned capability is needed to establish a guidance solution to reach the landing site reliably. This...
This paper describes an efficient and easily implemented algorithmic approach to extracting an approximation to an image’s dominant projected illumination direction, based on intermediary results from a segmentation-based crater detection algorithm (CDA), at a computational cost that is negligible in comparison to that of the prior stages of the CDA. Most contemporary CDAs built for spacecraft navigation...
In this paper we review the image processing aspects of the popular edge-based approaches to crater detection in spacecraft navigation and discuss their performance and inherent shortcomings and the constraints these impose on mission parameters. Key weaknesses are identified and an alternative, edge-free approach is suggested. No comprehensive evaluation of detection rates and ratio of false positives...
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