Global Navigation Satellite Systems (GNSS) like GPS have become part of everyday life. From navigation as was its original intent to highly accurate and relatively cheap timekeeping and making games out of walking outside.
However, tools to test GNSS-enabled systems can be expensive, especially for non-GPS systems or they bypass the actual GNSS receiver.
Therefore I made a free and open-source GNSS simulator framework and implemented five different GNSS signals on top of it (GPS L1 C/A, GLONASS L1, Galileo E1, Beidou B1I, and IRNSS L5). This thesis document will explain how the framework works and evaluate the five simulators.
Because easy access to GNSS simulators means more people can abuse it I will also cover spoofing and spoofing detection.
While spoofing can be used for nefarious purposes I show how it can potentially be used to protect from GNSS guided drones. ... Read more

Chromastereoscopy makes use of special glasses to make its wearer see two slightly different images, one for each eye. With a properly created image this results in perceived depth. It does this by bending light dependent on its wavelength and in the opposite direction for each eye. When a ChromaDepth image is properly created most viewers perceive the image as having a 3D effect. However, since the glasses act on wavelengths and not on perceived colors, different display media like screens and printers could result in a different perception of the images through the glasses. To investigate this possible difference I measured reflectance spectra of printed colors, and created an algorithm to simulate the effect the glasses have on images made with mixes of these colors. Additionally I tried multiple visualization techniques to digitally show the effect including depth.
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