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Projecte llegit

Títol: Anàlisi comparativa d'arquitectures de constel·lació LEO, MEO i híbrida LEO-MEO per a comunicacions segures en el marc del programa europeu IRIS2

Estudiants que han llegit aquest projecte:

Director/a: FORNÉS MARTÍNEZ, HECTOR

Departament: FIS

Títol: Anàlisi comparativa d'arquitectures de constel·lació LEO, MEO i híbrida LEO-MEO per a comunicacions segures en el marc del programa europeu IRIS2

Data inici oferta: 19-07-2025     Data finalització oferta: 19-03-2026


Estudis d'assignació del projecte:
    GR ENG SIST AEROESP
Tipus: Individual
 
Lloc de realització: EETAC
 
Paraules clau:
IRIS2; constel·lacions de satèl·lits; LEO; MEO; arquitectura multiòrbita; comunicacions segures; cobertura; latència; redundància; resiliència geomètrica; MATLAB
 
Descripció del contingut i pla d'activitats:
 
Overview (resum en anglès):
The IRIS2 programme is the European Union initiative to establish a sovereign, secure and resilient satellite communications infrastructure. Due to the lack of detailed public information on the final system architecture, this project presents a comparative study of LEO, MEO and hybrid LEO-MEO constellation architectures aligned with the general objectives of the programme.

Several representative configurations are defined according to the main orbital parameters: number of satellites, orbital altitude and inclination. A geometric simulation model developed in MATLAB is used to evaluate the configurations over a 5 degree geographic grid and a 72-hour simulation horizon. The analysis focuses on three main performance metrics: full global coverage, minimum redundancy and maximum one-way geometric latency.

The results show that a LEO constellation with 53 degree inclination provides good coverage over Europe but does not guarantee continuous global coverage, especially at high latitudes. Near-polar LEO configurations achieve full global coverage and low latency, while the MEO constellation provides global coverage and redundancy with fewer satellites but does not satisfy the low-latency requirement. The hybrid LEO-MEO architecture offers the best overall trade-off, combining the low latency of the LEO layer with the additional coverage and redundancy provided by the MEO layer.

The study concludes that, within the assumptions and requirements considered, multi-orbit architectures provide a more balanced solution than single-orbit configurations for secure satellite communications systems inspired by IRIS2.

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