Searched for: subject:"navigation"
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Zeeuwe, Daan (author)
Biologically plausible representations have been found to emerge in particular recurrent neural networks when training on path-integration [1, 2]. This report explores factors influencing the occurrence of entorhinal-like representations in recurrent neural networks. Reproducing simplified models from existing studies and created a hybrid model...
master thesis 2019
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Kemper, Arno (author)
The operation and maintenance of most of the Dutch primary navigation locks are the responsibility of Rijkswaterstaat. The portfolio of Rijkswaterstaat consists of 52 primary navigation locks that are part of the primary flood defence. All these navigation locks are assigned a safety norm together with the adjacent water-retaining bodies. For...
master thesis 2019
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Devaraju, Abhilash (author)
AGVs have seen an upward trend in development over the last 60 years. The technology has developed from mechanical bumpers and guided wire navigation to contactless sensors and free navigation technique in the current age. Further, the control on AGVs has moved from central control system to local intelligence which opens up various...
master thesis 2019
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Lamers, Sanne (author)
This research focuses on GNSS users interested in a faster position fix in a situation where the receiver holds limited data. This occurs when turning on a mobile phone or sport watch to use a location-based service, driving out of a parking garage with a navigational device or activating a search & rescue beacon. In these cases, users care...
master thesis 2019
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Flikweert, Puck (author)
Because of urbanisation, more than 50% of the global population now lives in cities, a number that is ever-increasing. This leads to a need for more dense and complex building constructions, driven by the fact that people are living increasingly close to one another. These structures are often so large that it becomes difficult to navigate in...
master thesis 2019
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de Jong, Tobias (author)
Enabling mobile robots to autonomously navigate complex environments is essential for real-world deployment in commercial, industrial, military, health care, and domestic settings. Prior methods approach this problem by having the robot maintain an internal map of the world and then use a localization and planning method to navigate through the...
master thesis 2019
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Hiemstra, Koen (author)
The summer and autumn of 2018 showed the negative effects of both low-flow conditions and bed degradation over the last century on the river functions of the Dutch Rhine. These resulted in record-breaking water levels, extreme low navigation depth and subsequently nautical problems. As climate change will increase the inter-annual variability of...
master thesis 2019
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Jongschaap, Arjen (author)
master thesis 2018
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Facchinelli, Michele (author)
The amount of propellant required to perform deep-space maneuvers usually consists of a large percentage of the total spacecraft mass. In the early '90s, a new technique was experimented at the end of the Magellan mission, which employed the atmosphere of Mars itself, to reduce the eccentricity of the orbit over a long period of time. Said...
master thesis 2018
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Dudink, Bart (author)
More than 50 locks owned by Rijkswaterstaat need replacement or renovation in the coming 40 years. Due to this fact an opportunity for changing the traditional way of building and maintaining navigational locks has arisen. Because of the replacement/renovation of locks in the coming time, implementing a new owning and building strategy is...
master thesis 2018
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Morandini, Nicolas (author)
This thesis demonstrates, that bathymetric data improves data imaging results of full wavefield migration using different acquisition designs. The algorithm gets more stable by constraining the inversion with the sea bottom information, especially in case of large source and receiver spacings, without making compromises on image quality. Not...
master thesis 2018
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Lambert, Ingrid (author), Parodi, Matteo (author), Vieira Passos, Marlon (author), Caldera, Ganga (author), Almadhoun, Yasser (author)
Relative sea level rise and climate change represent long-term threats for the ecosystems and flood defence system in the Wadden Sea. Moreover, the flood-dominant tidal basins in the area lead to sedimentation in the navigational channels used by the ferry services that connect the mainland to the Dutch Wadden islands. This report provides flood...
student report 2018
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Magalhães Oliveira, Beatriz (author)
For space exploration, reducing the size of landing ellipses, increases the access to areas of scientific interest. This can be achieved with improved GNC systems. Since the exclusive use of IMUs is insufficient for Pinpoint Landing, optical navigation is being explored as a solution.<br/><br/>The method developed in this work is based on image...
master thesis 2018
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Siddiquee, Manan (author)
Reinforcement Learning (RL) has been applied to teach quadcopters guidance tasks. Most applications rely on position information from an absolute reference<br/>system such as Global Positioning System (GPS). The dependence on "absolute<br/>position" information is a general limitation in the autonomous flight of Unmanned Aerial Vehicles (UAVs)....
master thesis 2018
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Ozo, Michaël (author)
High-speed autonomous flight of Micro Air Vehicles has gained much attention in recent years. However, flight in complex GPS-denied environments still poses a serious challenge. One scenario which contains these elements is drone racing, where pilots have to fly complex tracks at high speed, often in an indoor environment. In this work we...
master thesis 2018
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Kisantal, Máté (author)
Safe navigation in a cluttered environment is a key capability for the autonomous operation of Micro Aerial Vehicles (MAVs). This work explores a (deep) Reinforcement Learning (RL) based approach for monocular vision based obstacle avoidance and goal directed navigation for MAVs in cluttered environments. We investigated this problem in the...
master thesis 2018
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Ambagts, Lindert (author), Jansen, Wiljan (author), de Jong, Nena (author), Kosters, Anna (author), Oerlemans, Cees (author), Slockers, Anouk (author)
The city of Barranquilla can play an important role in the establishment in a multi-modal network. Currently however, issues with navigable depth in the river mouth (Bocas de Ceniza) make it difficult for the larger vessels to enter the port area. Resolving these issues will increase the navigability of the Magdalena river which in turn will...
student report 2018
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Garu Sanchez, Yeray (author)
Airbus Defence and Space GmbH in Friedrichshafen is the project coordinator of the NEOShield-2 project whose purpose is to develop the technology needed for near-Earth object (NEO) impact prevention. This research is located within the scope of a kinetic impactor mission which typically consists of two spacecraft: impactor and observer. This...
master thesis 2017
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Rucci, Manuel (author)
Quadrotors  are unmanned aerial vehicles (UAVs) which are controlled by changing the angular speed of the four rotors. In the recent years, they have received a large  attention from the research community thanks to their  vertical take-off and landing capability, small dimension, payload, flight endurance and low price  which it has increased...
master thesis 2017
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van Dijk, Tom (author)
This thesis presents a visual route following method that minimizes memory consumption to the point that even Micro Aerial Vehicles (MAV) equipped with only a simple microcontroller can traverse distances of a few hundred meters. Existing Simultaneous Localization and Mapping (SLAM) algorithms are too complex for use on a microcontroller....
master thesis 2017
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