Projecte matriculat
Títol: Characterization of Real-Time GNSS Orbit and Clock Errors from SSR-Augmented Broadcast Ephemeris
Director/a: SANZ SUBIRANA, JAUME
Departament: MAT
Títol: Characterization of Real-Time GNSS Orbit and Clock Errors from SSR-Augmented Broadcast Ephemeris
Data inici oferta: 30-01-2026 Data finalització oferta: 30-09-2026
Estudis d'assignació del projecte:
DG ENG AERO/SIS TEL
| Tipus: Individual | |
| Lloc de realització: EETAC | |
| Segon director/a (UPC): ARAGON ANGEL, MARIA ANGELES | |
| Paraules clau: | |
| GNSS, GPS, Galieo, BeiDou, Orbits, clocks, accuracy | |
| Descripció del contingut i pla d'activitats: | |
| The proliferation of high-precision real-time Global Navigation Satellite System (GNSS) applications, from autonomous navigation to precise surveying, is critically dependent on the quality of real-time satellite orbit and clock data. These products are typically generated by augmenting the standard broadcast ephemeris with Real-Time State Space Representation (SSR) corrections delivered via internet protocols. However, a comprehensive, independent characterization of the errors associated with these combined products across multiple constellations is essential for performance benchmarking and risk assessment.
This project presents a methodology and analysis for characterizing the Signal-in-Space Errors of real-time precise orbits and clocks for GPS, Galileo, and BeiDou satellites. We implement a processing pipeline that ingests live SSR correction streams and broadcast navigation messages to generate real-time satellite states. These are rigorously validated against final precise ephemeris products from the International GNSS Service (IGS), which serve as a reference truth. The analysis decomposes the total error into its constituent orbital (radial, along-track, cross-track) and clock components, providing insights into the primary sources of inaccuracy. Key performance metrics-including accuracy (RMS), precision (STD), and clock stability-are computed statistically over an extended observation period. The results provide a clear benchmark for the current state-of-the-art in SSR-based positioning, highlight performance differences between GNSS constellations, and offer critical data to users and service providers for optimizing real-time, high-accuracy positioning solutions. |
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| Orientació a l'estudiant: | |
| Requereix activitats hardware: No | |
| Requereix activitats software: Sí Sistema operatiu: Linux Disc (Gb): | |
| Horari d'atenció a estudiants per a l'assignació de projecte: |
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