Contributions to radio frequency interference detection and mitigation in Earth observation
Radio Frequency Interference (RFI) is the most common problem for electronic measuring systems. The presence of those electromagnetic waves can harm the measurements taken from very sensitive instruments, like microwave radiometry or navigation systems. The accuracy and precision are compromised. A...
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| Tipo de recurso: | tesis doctoral |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/95601 |
| Acceso en línea: | https://hdl.handle.net/2117/95601 https://dx.doi.org/10.5821/dissertation-2117-95601 |
| Access Level: | acceso abierto |
| Palabra clave: | Àrees temàtiques de la UPC::Enginyeria dels materials |
| Sumario: | Radio Frequency Interference (RFI) is the most common problem for electronic measuring systems. The presence of those electromagnetic waves can harm the measurements taken from very sensitive instruments, like microwave radiometry or navigation systems. The accuracy and precision are compromised. A first step to mitigate those unwanted effects is to study the RFI properties. Different algorithms have been proposed to detect the interferences, but there is no method that works in all cases. The scope of this dissertation is the design, implementation and testing of different detection and mitigation methods in real-time. Performed surveys and characterization of RFI sources provide a great contribution to optimize the current mitigation techniques. In the mitigation area, two real-time hardware systems have been implemented: a wavelet denoise system to model the RFI and mitigate it, and a circuit to allow a navigation system to continue operational under the effects of a jammer. |
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