Design and Implementation of a GNSS reflectometer using a software defined radio
The 3Cat-2 nanosatellite payload includes, amongst other experiments, a Global Navigation Satellite System Reflectometry (GNSS-R) receiver. The payload captures GNSS data from the two channels of a Software Defined Radio (SDR) connected to two arrays of antennas (for direct and reflected signals). R...
| Autor: | |
|---|---|
| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2015 |
| 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:2117/103848 |
| Acceso en línea: | https://hdl.handle.net/2117/103848 |
| Access Level: | acceso abierto |
| Palabra clave: | Synthetic aperture radar Global Positioning System Artificial satellites GNSS-R GNSS Reflectometry GPS BeiDou Galileo SDR satellite nanosatellite CubeSat embedded Linux payload Reflectometría satélite nanosatélite carga útil SAR (Synthetic Aperture Radar) Radar d'obertura sintètica Sistema de posicionament global Satèl·lits artificials Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radar |
| Sumario: | The 3Cat-2 nanosatellite payload includes, amongst other experiments, a Global Navigation Satellite System Reflectometry (GNSS-R) receiver. The payload captures GNSS data from the two channels of a Software Defined Radio (SDR) connected to two arrays of antennas (for direct and reflected signals). Raw data is stored in binary files by the payload computer which also processes them afterwards, all by means of the software described in this work. To do so it takes advantage of the capabilities of its ultra-low power ARM processor and a Linux OS. As a result, this system can create Delay Doppler Maps (DDM) using information from multiple GNSS constellations and stores them as small, compressed files that are a good compromise for the satellite’s tight link budget. |
|---|