Search for dissertations about: "distortion of space"
Showing result 1 - 5 of 35 swedish dissertations containing the words distortion of space.
-
1. The effect of spacecraft charging on low-energy ion measurements around comet 67P/Churyumov-Gerasimenko
Abstract : A spacecraft in space interacts with the surrounding environment and aqcuires an electrostatic potential. Charged particles are constantly bombarding the surface of the spacecraft, and at the same time solar EUV radiation induces photoemission, causing electrons to be emitted from the surface. READ MORE
-
2. Modeling Width in Spatial Optimization in Raster Space
Abstract : Given a grid of cells, each of which is assigned a numerical value quantifying its utility (or cost) for a certain use, a popular type of problem in geographic information science is raster-based spatial optimization. Such problems commonly seek to find a set of cells that maximizes (or minimizes) that utility (or cost) while adhering to a given set of constraints. READ MORE
-
3. Low-energy ions around comet 67P/Churyumov-Gerasimenko
Abstract : Low-energy ions play important roles in the formation of the plasma environment around a comet. Reliable ways of measuring these ions are therefore of high importance to fully understand the processes and dynamics of this environment. Unfortunately, low-energy ions are infamously difficult to detect. READ MORE
-
4. Multi-sightline neutron emission spectroscopy of D and T fusion plasmas at JET
Abstract : An analysis of the neutron emission from a fusion plasma can be used to determine plasma properties and diagnose fusion performance. In this thesis, several analysis methods for neutron spectroscopy are presented and applied to data from the experimental fusion device JET. READ MORE
-
5. Design and development of a microwave multifrequency polarimetric scatterometer for biosphere remote sensing
Abstract : Microwave radar and radiometer techniques are used to gather crucial information about the earth and its atmosphere. The ERS-1, JERS-1, RadarSAT and NASA’s Mission to Planet Earth projects are designed to study the changing global environment. In all these endeavors, the key instrument is the radar or scatterometer. READ MORE