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 6 of 6 for “"Real-time guidance"”.
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Path Planning for Trajectory Guided Freehand Ultrasound Scan
… portability, safety, versatility, and real-time information. However, the lack of information on the position and orientation of the ultrasound probe makes it challenging to obtain 3D images from 2D ultrasound slices. Without the expert knowledge, the user may not acquire precise images …
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L1 adaptive control within Learn-to-Fly
… control framework that was combined with real-time modeling and real-time guidance algorithms to test the feasibility of the NASA Learn-to-Fly concept. The objective of Learn-to-Fly is to reduce or eliminate the need for ground-based aerodynamic modeling in favor of in-flight modeling and …
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An integrated traverse planner and analysis tool for future lunar surface exploration
… SEXTANT is twofold: to provide engineers with a realistic simulation of traverses to assist with hardware design, and to serve as an aid for astronauts that will allow for more autonomy in traverse planning and re-planning. SEXTANT is a MATLAB-based tool that computes the most efficient path …
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Investigations of Ultrasound-Guided Histotripsy Ablation for Soft Tissue Sarcomas, Osteosarcomas, and Brain Tumors
… histotripsy treatment can be visualized in real time on ultrasound imaging, assisting with treatment guidance and monitoring. Past studies have demonstrated histotripsy's potential for a variety of applications, but histotripsy has not yet been investigated for superficial musculoskeletal …
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Non-invasive in vivo ultrasound temperature estimation
… advent of diagnostic imaging tools for guidance of thermal therapy was a key factor in the clinical acceptance of these minimally invasive or noninvasive methods. More recently, ultrasound and magnetic resonance (MR) thermography techniques have been proposed for guidance, monitoring, …
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Assessment of application of the steep-lifting entry trajectory solution to real-time entry guidance
Closed-form analytical guidance algorithms are highly desirable in the context of real-time aerospace guidance applications. The steep-lifting entry trajectory solution is a set of closed-form analytical approximate solutions to the planar equations of motion, which includes expressions for range, …