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3-D shape interrogation by medial axial transformSherbrooke, Evan Conway January 1995 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1995. / Includes bibliographical references (p. 139-147). / by Evan Conway Sherbrooke. / Ph.D.
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Dynamic sonar perceptionRikoski, Richard J January 2003 (has links)
Thesis (Ph. D. in Marine Robotics)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2003. / Includes bibliographical references (leaves 183-192). / Reliable sonar perception is a prerequisite of marine robot feature-based navigation. The robot must be able to track, model, map, and recognize aspects of the underwater landscape without a priori knowledge. This thesis explores the tracking and mapping problems from the standpoint of observability. The first part of the thesis addresses observability in mapping and navigation. Features are often only partially observable from a single vantage point; consequently, they must be mapped from multiple vantage points. Measurement/feature correspondences may only be observable after a lag, and feature updates must occur after a delay. A framework is developed to incorporate temporally separated measurements such that the relevant quantities are observable. The second part of the thesis addresses observability in tracking. Although there may be insufficient information from a single measurement to estimate the state of a target, there may be enough information to observe correspondences. The minimum information necessary for a dynamic observer to track locally curved targets is derived, and the computational complexity is determined as a function of sonar design, robot dynamics, and sonar configuration. Experimental results demonstrating concurrent mapping and localization (CML) using this approach to early sonar perception are presented, including results from an ocean autonomous underwater vehicle (AUV) using a synthetic aperture sonar at the GOATS 2002 experiment in Italy. / Richard J. Rikoski. / Ph.D.in Marine Robotics
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Computation of higher-order hydrodynamic forces on ships and offshore structures in wavesKim, Yonghwan, 1964- January 1999 (has links)
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1999. / Includes bibliographical references (leaves 163-170). / by Yonghwan Kim. / Ph.D.
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Analysis of multi-component ducted propulsors in unsteady flowHughes, Michael J. (Michael Joseph) January 1993 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1993. / Includes bibliographical references (leaves 188-192). / by Michael Jospeh Hughes. / Ph.D.
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Specifications and design of a flexible information management system for large data bases.Szasz, Nicola Pedro January 1974 (has links)
Massachusetts Institute of Technology. Dept. of Ocean Engineering. Thesis. 1974. M.S. / MICROFICHE COPY ALSO AVAILABLE IN BARKER ENGINEERING LIBRARY. / Bibliography: leaves 133-134. / M.S.
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Optimization of catamaran demihull from wave resistance stand point.Popescu, Gheorghe January 1973 (has links)
Massachusetts Institute of Technology. Dept. of Ocean Engineering. Thesis. 1973. M.S. / MICROFICHE COPY ALSO AVAILABLE IN BARKER ENGINEERING LIBRARY. / Includes bibliographical references. / M.S.
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Apparatus for simultaneous measurement of internal combustion engine ring/liner oil film thickness and frictionDearlove, Janice Vivienne January 1994 (has links)
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994. / Includes bibliographical references (p. 138-140). / by Janice Vivienne Dearlove. / M.S.
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Three-dimensional fully-nonlinear simulations of waves and wave body interactionsXue, Ming, 1967- January 1997 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1997. / Includes bibliographical references. / by Ming Xue. / Ph.D.
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Modeling of monostatic bottom backscattering from three-dimensional volume inhomogeneities and comparisons with experimental dataLi, Dan, 1969- January 1997 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1997. / Includes bibliographical references (leaves 179-186). / by Dan Li. / Ph.D.
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Numerical methods for boundary integral equations in wave body interactionsLee, Chang-Ho January 1988 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1988. / Includes bibliographical references. / by Chang-Ho Lee. / Ph.D.
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