False Multi Location

A GNSS Simulation Framework and view into spoofing

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Abstract

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.

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TU_Delft_Thesis_GNSS.pdf
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File under embargo until 30-08-2026