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Global localization of a planetary-exploration rover in the absence of a satellite-based global positioning system (GPS) is still an open problem. Although a satellite network is not available for localization around any near-term exploration targets, topographic maps derived from satellite imagery are available. This has spurred the development of several algorithms that perform global localization...
This paper investigates a star identification algorithm to improve the performance of especially a micro star tracker whose Field-of-view (FOV) is small. This algorithm is characterized by combining the images from two star trackers to identify the stars, rather than identifying the stars in each image separately. To improve the success ratio of star identification and attitude estimation accuracy,...
In this paper we present a low cost fault-tolerant attitude determination system to a scientific satellite using COTS devices. We related our experience in developing the attitude determination system, where we combine proven fault tolerance techniques to protect the whole system composed only by COTS from the effects produced by transient faults. We detailed the failure cases and the detection, reconfiguration...
Road tracking is a promising technique to increase the efficiency of road mapping. In this paper, a new road tracker, angular texture signature, is proposed based on the knowledge of the roads on high resolution imagery. The tracker uses parabola to model the road trajectory and predict the position of next road centreline point. It employs angular texture signature to get the moving direction of...
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