Searched for: contributor%3A%22Root%2C+B.C.+%28mentor%29%22
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van den Bogaard, Fenna (author)
The origin of the Martian dichotomy is subject to question and no substantial evidence exists. Some surface and interior features that are not visible in, e.g., topography data, can show up in gravity data. Therefore, this research inverts gravity data to find a crustal and mantle global density model. Previous research performed a one-layer...
master thesis 2024
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Sprenkels, Amber (author)
This thesis analyses the possibility of creating a portable Doppler tracking ground station using commercial of the shelf components. This solution is called DopTrackBox and is based on TU Delft’s DopTrack. This system uses the Doppler shift of radio signals received from satellites to analyse their location and velocity. Different experiments...
master thesis 2023
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van Oorschot, Marijn (author)
Spacecraft navigation and control is difficult in deep space operations. Especially around asteroids, the irregular gravity field increases the difficulty of estimating the spacecraft trajectory. Autonomous navigation can increase the safety and accuracy for orbit proximity operations. Furthermore, it eliminates the need for continuous...
master thesis 2022
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van Brummen, Bodjie (author)
In 2018 the InSight mission was launched with the main objective of providing accurate 3D models of Mars’s interior. This was done by placing a seismometer on the surface of Mars to measure seismic activity. In 2021 three studies were published, one dedicated to the Martian core, one to the Martian mantle, and the last one focused on the Martian...
master thesis 2022
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Spee, Stan (author)
The history of space exploration shows a widespread interest in asteroids. These small bodies were visited by multiple spacecrafts made by different space organizations through time. The asteroids give us information about the history of the solar system, due to their unchanged state since the early beginning of the Solar System. In the future,...
master thesis 2022
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Bakx, Aaron (author)
The Moon is covered by a blanket of rock fragments and loosely bound dust particles called regolith. This layer is key in deciphering the evolution of the Moon and the terrestrial planets, including Earth. It is also a protagonist in the return of humanity to the Moon after its last visit over half a century ago. The main concern for lunar...
master thesis 2021
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Qin, WeiLun (author)
Mars has been a target for space exploration for decades. Exploring the interior of the red planet could reveal information about its formation and evolution. In this thesis, the crustal structure of Mars is investigated by a power spectra analysis of both topographic and gravitational data. With models of flexural isostasy, the best-fitting...
master thesis 2021
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van der Tang, Youandi (author)
The gravity potential field ofMars is characterized by a long-wavelength feature located at the Tharsis region. In addition, this region houses large volcanoes that have been active until geologically recently (200 to 100 Ma ago). Research has not succeeded in pinpointing the cause of this long-wavelength areoid high, while some researchers...
master thesis 2021
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Mussini, Juan (author)
The subsurface of Mars is impossible to measure directly, yet it has been the subject of many studies. An understanding of the subsurface of Mars would yield large amounts of information on the history of the planet. Two of the tools available to indirectly interact with the Martian subsurface, in particular the lithosphere, are the gravity and...
master thesis 2020
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Mulder, Liselotte (author)
Large Low Shear-Velocity Provinces (LLSVPs) in Earth have been recognized in seismic data for several decades. The anomalies are however still poorly understood for reasons including their inconvenient location in the deep mantle, inhibiting progress in our understanding. Comprehension of these structures is important, because of their...
master thesis 2019
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Vermeulen, Sander (author)
The GRACE mission has provided unprecedented insights into mass redistribution processes in the Earth system. Following a strong call for continuation of the mass observations, the GRACE-Follow On (GRACE-FO) mission was launched in May 2018, leaving a coverage gap of ca. 1 year between GRACE and GRACE-FO. Geopotential solutions derived from data...
master thesis 2019
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Wolfs, Rimsky (author)
Meteors have been observed by accident from geostationary orbit (GEO). It is of interest for surveillance, meteor science and the updating of empirical models to know what instruments are needed on a GEO satellite to observe meteors and re-entering capsules in Earth ‘s atmosphere. A re-entry simulation code is written to fill the gap of missing...
master thesis 2019
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De Backer, Lisa (author)
The 26th of November 2018, NASA's InSight mission successfully landed on Mars. InSight has a seismometer on board with as main science goal to determine the current level of seismic activity and the impact rate of meteorites on Mars. To process the incoming data of InSight as fast and efficient as possible, a-priori models of seismicity on Mars...
master thesis 2018
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van Rossum, Leon (author)
Satellite-derived gravity models have been used in modelling of several subduction zones, but not yet for the Sumatra subduction zone. There, gravity models can shed light on the geometry and density of the plate, and whether a slab tear is present under northern Sumatra, as seismic and tomographic studies present contradicting conclusions.<br/>...
master thesis 2018
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Pronk, Anne (author)
Measurements in the frequency range below 30 MHz, key to a better understanding of the origins of our universe, are one of the last unexplored areas of radio astronomy. Low frequency measurements suffer greatly from disturbance from man-made signals. Therefore, satellite missions are proposed which use the Moon as a shield from these...
master thesis 2018
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Jimenez Lluva, David (author)
Electric Propulsion (EP) has become one of the most efficient technologies for spacecraft propulsion. In contrast to conventional chemical propulsion, the low thrust force generated by EP thrusters can deliver a momentum transfer to the spacecraft that is up to twenty times greater, for an equivalent propellant expenditure. Despite decades of...
master thesis 2017
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