Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Terrain classification"”.
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Vision-based terrain classification and classifier fusion for planetary exploration rovers
… Knowledge of the physical properties of the terrain surrounding a planetary exploration rover can be used to allow a rover system to fully exploit its mobility capabilities. Here a study of multi-sensor terrain classification for planetary rovers in Mars and Mars-like environments is …
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Learning to visually predict terrain properties for planetary rovers
… interesting sites that lie in rugged terrain, far from landing areas. This thesis presents an algorithmic framework designed to improve rover-based terrain sensing, a critical component of any autonomous mobility system operating in rough terrain. Specifically, this thesis addresses …
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Synthetic aperture radar image simulator for interferometry
… simulation method employs image statistics and terrain geometry to form a synthetic image and requires inputs of a digital elevation model (DEM), flight path, description, radar parameters, a terrain classification map and temporal decorrelation factors. Output images include the following …
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Hyperspectral Image Compression Using a Two-Stage KLT
… error as well as the performance of a terrain-classification algorithm. A relationship between partition size and minimal inter-partition decorrelation is also proposed and may act as a guide in the tuning of compression settings.
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Terrain identification methods for planetary exploration rovers
Autonomous mobility in rough terrain is becoming increasingly important for planetary exploration rovers. Increased knowledge of local terrain properties is critical to ensure a rover's safety, especially when driving on slopes or rough surfaces. This thesis presents two methods for using on-board …
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The influence of snowcover distribution and variable melt regimes on the transport of nutrients from two high Arctic watersheds
… DOC, DON and DIN (NH4+ and NO3-). An objective terrain classification weighted equally on slope, aspect and land surface curvature was applied to the two watersheds using an ISODATA unsupervised classification scheme to determine watershed SWE. The terrain model confirmed that topography likely …
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Offroad autonomous vehicle development and model-based adaptive robust control strategy
… challenges, including low traction, uneven terrain, rapidly changing slopes, and high vibration levels. Model-based controllers have the potential to improve control performance in challenging off-road scenarios significantly. Preliminary work focused on simulator development and control …
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SMALL AND LARGE PERCEPTION MODELS FOR ROBOTIC NAVIGATION
… such as object detection, segmentation, and terrain classification. On the other hand, large-scale vision models, particularly vision-language models (VLMs), leverage extensive training data to capture richer contextual information and enhance generalization. Yet, these benefits often come at …
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LANDSLIDE INVESTIGATION IN THE RÍO AGUAS CATCHMENT, SOUTHEAST SPAIN
… basis of the ground model is a project-derived terrain classification for the study area. The data analysis has shown that although a variety of landslide failure mechanisms are seen within the study area, the majority of the landsides are rock falls and topples and/or occur within incised …
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Topographic Effects in Strong Ground Motion
Ground motions from earthquakes are known to be affected by earth's surface topography. Topographic effects are a result of several physical phenomena such as the focusing or defocusing of seismic waves reflected from a topographic feature and the interference between direct and diffracted seismic …