Cliff monitoring is essential to stakeholders for their decision-making in maintaining a healthy coastal environment. Recently, photogrammetry-based technology has shown great successes cliff monitoring. However, many methods date require georeferencing efforts by either measuring geographic coordinates of the ground control points (GCPs) or using global navigation satellite system (GNSS)-enabl...

Abstract— Future planetary exploration missions will use cooperative robots to explore and sample rough terrain. To succeed robots will need to cooperatively acquire and share data. Here a cooperative multi-agent sensing architecture is presented and applied to the mapping of a cliff surface. This algorithm efficiently repositions the systems’ sensing agents using an information theoretic appro...

Planetary surface mobility has to date been limited to benign locations. If rover systems could be developed for more challenging terrain, e.g., sloped and irregularly featured areas, then planetary science opportunities would be greatly expanded. We have in the last several years carried out a related program of R&D that involves new concepts in reconfigurable mobility and on-board adaptive co...

In our reply to Williamson, we offered models where traditional Gettier cases arise but which differ from Williamson’s models in three related respects: first, non-traditional, fake-barn style Gettier cases do not arise in our models; second, knowledge iterates in our models; and, finally, our models do not have the Moorish consequences of Williamson’s models.1 Predictably, Williamson thinks th...