Search for dissertations about: "Rymd- och flygteknik"
Showing result 1 - 5 of 156 swedish dissertations containing the words Rymd- och flygteknik.
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1. Spaceborne Synthetic Aperture Radar for Sea Ice Observations, Concentration and Dynamics
Abstract : Spaceborne Synthetic Aperture Radar (SAR) is the primary choice for sea ice monitoring due to its all-weather, day-and-night capability and regular delivery of high resolution images. This thesis presents methods for estimation of sea ice concentration and drift, a multi-sensor study of Baltic Sea ice radar signatures and an interferometric study of landfast sea ice. READ MORE
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2. Improving Fixed Wing UAV Endurance, by Cooperative Autonomous Soaring
Abstract : The ever-expanding use and development of smaller UAVs (Unmanned Aerial Vehicles) has highlighted an increasing demand for extended range and endurance for this type of vehicles. In this thesis, the development of a concept and system for autonomous soaring of cooperating unmanned aerial vehicles is presented. READ MORE
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3. Uncertainty and Robustness in Aerospace Structures
Abstract : Engineering is not an exact science. In fact, all engineering activity contain some degree of assumption, simplification, idealization, and abstraction. When engineered creations meet reality, every manufactured product behaves differently. This variation can be detrimental to product quality and functionality. READ MORE
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4. Bio-inspired retinal optic flow perception in robotic navigation
Abstract : This thesis concerns the bio-inspired visual perception of motion with emphasis on locomotion targeting robotic systems. By continuously registering moving visual features in the human retina, a sensation of a visual flow cue is created. An interpretation of visual flow cues forms a low-level motion perception more known as retinal optic flow. READ MORE
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5. Turbulence-resolving simulations for engineering applications
Abstract : Most fluid flows of industrial interest are turbulent and their accurate representation may be of vital importance for the design process of new products. To date, steady RANS methods are usually employed for the simulation of turbulent flows of everyday engineering problems. READ MORE