Kaiserslautern - Fachbereich Informatik
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With the ever-increasing amount of satellite-backed communication, constellations covering the entire world, and the rise of Software Defined Radios (SDRs), satellite signals have already become prime targets for scientific research all over the globe. However, due to logistical challenges like capture time/location and peripheral/system management for the sensors and the wide variety of protocols/encoding schemes used, no one-fits-all sniffing solution exists for capturing their wide variety of signals. Therefore, this thesis aims to analyze, design, and implement a system that makes it possible to study LEO (Low Earth Orbit) L-Band satellite signals with readily available Single Board Computers (SBCs) in a widely distributed, location, and time-aware way. The key design factors were useability, maintainability, adaptability, and security in a centrally managed client-server architecture. The research presented yielded a Satellite probe Operating System called SATOS, which aims to implement on-sensor data decoding driven by GNU Radio and secure Over The Air (OTA) updates inside the Buildroot build environment. Its intended use case is the future deployment of DISCOSAT on a university working group scale.