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A method for on-line water current velocity estimation using Lol-cost autonomous underwater vehicles
(Massachusetts Institute of Technology, 2020)
Advances in the miniaturization of microelectronics has greatly contributed to the proliferation of small, low cost autonomous underwater vehicles (AUVs). These affordable vehicles offer organizations a flexible platform ...
A planned approach to high collision risk area
(Massachusetts Institute of Technology, 2020)
This thesis examines the transition of a vessel from the open ocean, where collisions are rare, to a high risk and heavy traffic area such as a Traffic Separation Scheme (TSS). Previous autonomy approaches generally view ...
Morphological approaches to understanding Antarctic Sea ice thickness
(Massachusetts Institute of Technology, 2020)
Sea ice thickness has long been an under-measured quantity, even in the satellite era. The snow surface elevation, which is far easier to measure, cannot be directly converted into sea ice thickness estimates without ...
Dense, sonar-based reconstruction of underwater scenes
(Massachusetts Institute of Technology, 2019)
Three-dimensional maps of underwater scenes are critical to-or the desired end product of-many applications, spanning a spectrum of spatial scales. Examples range from inspection of subsea infrastructure to hydrographic ...
Automated open circuit scuba diver detection with low cost passive sonar and machine learning
(Massachusetts Institute of Technology, 2019)
This thesis evaluates automated open-circuit scuba diver detection using low-cost passive sonar and machine learning. Previous automated passive sonar scuba diver detection systems required matching the frequency of diver ...
Coordinated tracking and interception of an acoustic target using autonomous surface vehicles
(Massachusetts Institute of Technology, 2019)
In today's highly advanced society, more industries are beginning to turn to autonomous vehicles to reduce costs and improve safety. One industry in particular is the defense industry. By using unmanned and autonomous ...
Computational approaches for sub-meter ocean color remote sensing
(Massachusetts Institute of Technology, 2021)
The satellite ocean color remote sensing paradigm developed by government space agencies enables the assessment of ocean color products on global scales at kilometer resolutions. A similar paradigm has not yet been developed ...
Development and deployment of a novel deep-sea in situ bubble sampling instrument for understanding the fate of methane in the water column
(Massachusetts Institute of Technology, 2019)
Methane (CH₄) is a potent greenhouse gas that is often found in a solid, hydrate clathrate form in marine sediments along continental margins and will often escape from the seafloor and rise through the water column as ...
Perception-driven optimal motion planning under resource constraints
(Massachusetts Institute of Technology, 2019)
Over the past few years there has been a new wave of interest in fully autonomous robots operating in the real world, with applications from autonomous driving to search and rescue. These robots are expected to operate at ...
Stochastic acoustic ray tracing with dynamically orthogonal equations
(Massachusetts Institute of Technology, 2020)
Developing accurate and computationally efficient models for ocean acoustics is inherently challenging due to several factors including the complex physical processes and the need to provide results on a large range of ...