Radio frequency interference is increasingly affecting radio communication systems in the geostationary satellite orbit. This interference is caused by a growing number of closely spaced satellite networks, overlapping coverage areas, and the intensive use of the limited radio spectrum. Particularly affected is the fixed-satellite service in the K- and Ka-bands. Since the 2019 World Radiocommunication Conference, this spectrum has been authorized to provide broadband services to aircraft (“in-flight entertainment”) via satellite. The K- and Ka- band spectrum is heavily utilized by terrestrial radiocommunication service, such as fixed point-to-point microwave links. The use of these frequency bands by aeronautical earth stations in the fixed-satellite service, in accordance with regulations, is only possible with the acceptance of interference from terrestrial radiocommunication services. This thesis investigates the interference potential of terrestrial fixed service links on aeronautical earth stations in the fixed-satellite service communicating with geostationary satellite orbit networks. Physical, technical, operational, and regulatory constraints are considered, from which an analytical interference channel model is formulated. The statistical characteristics of the radio frequency interference in the aeronautical satellite receiver are determined based on extensive geometric simulations, and the resulting impacts on the broadband satellite link are quantified. Building on this, a novel, scalable stochastic channel model is developed. Thereby, representative interference channel states for a higher-order Markov process are derived by Vector quantization. The Markov chain enables a realistic representation of the statistical distribution functions and the temporal dynamics of the interference. The capability to scale the model to different frequencies, antenna diameters, and flight velocities is developed. In addition, a concept for an experimental measurement campaign is presented to validate the model assumptions. The results provide a scalable, regulation-compliant channel model for terrestrial fixed service interference to aeronautical satellite receivers in the 17.7-19.7 GHz frequency range. This channel model supports the design of resilient aeronautical satellite communication systems in shared frequency band. Furthermore, it offers a foundation for developing mitigation measures for interference reduction.     «

Radio frequency interference is increasingly affecting radio communication systems in the geostationary satellite orbit. This interference is caused by a growing number of closely spaced satellite networks, overlapping coverage areas, and the intensive use of the limited radio spectrum. Particularly affected is the fixed-satellite service in the K- and Ka-bands. Since the 2019 World Radiocommunication Conference, this spectrum has been authorized to provide broadband services to aircraft (“in-fl...     »