Lightweight Rovers for Mars Science Exploration and Sample Return
We report on the development of new mobile robots for Mars exploration missions.
Engineering topics
Publications and source records attributed to Matthies, L..
We report on the development of new mobile robots for Mars exploration missions.
Due to the small size, irregular shape and variable surface properties of small bodies, accurate motion and position estimation is needed for safe and precise small body exploration.
One goal of the Demo III unmanned ground vehicle program is to enable autonomous nighttime navigation at speeds of up to 10 m.p.h.
Space science and solar exploration are driving NASA to develop an array of small body missions ranging in scope from near body flybys to complete sample return.
Because they hold answers to questions about the origin of our solar system, comets and asteroids play a prominent role in NASA's roadmap for solar system exploration. This paper presents an algorithm for autonomous onboard motion estimation that will enable the precision guidance and landing necessary for small body sample return.
This paper describes the technologies under development, the applications where these technologies are relevant to both space and military missions, and the status of the most recent technology demonstrations in terrestrial scenarios.
We present a novel stereoscopic mapping system for use in nuclear accident settings. First we discuss a radiation shielded sensor array desigtned to tolerate 10(sup 6)R of cumulative dose. Next we give procedures to ensure timely, accurate range estimation using trinocular stereo. Finally, we review the implementation of a system for the integration of range information into a 3-D, textured, metrically accurate surface mesh.
This paper surveys key progress in sensors, algorithms, and processors that has alleviated these specific barriers, thereby enabling practical autonomous navigation.
Much prior work in mobile robot path planning has been based on assumptions that are not really applicable for exploration of planetary terrains.
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We describe a method for recognizing surface-lying ordnance in test ranges using stereo range information and image edge maps.
There are significant international efforts underway to place mobile robots (rovers) on the surface of Mars.
A new laser-based optical sensor system that provides hazard detection for planetary rovers is presented. It is anticipated that the sensor can support safe travel at speeds up to 6cm/second for large (1m) rovers in full sunlight on Earth or Mars. The system overcomes limitations in an older design that require image differencing ot detect a laser stripe in full sun.
A system was developed for the Mars Pathfinder rover in which the rover checks its position by viewing the angle back to a colored cylinder with different colors for different angles. The rover determines distance by the apparent size of the cylinder.
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