Semiassisted Signal Authentication for Galileo: Proof of Concept and Results

Ignacio Fernandez-Hernandez, Jón Winkel, Cillian O'Driscoll, Simón Cancela, Rafael Terris-Gallego, Jose A. López-Salcedo, Gonzalo Seco-Granados, Andrea Dalla Chiara, Carlo Sarto, Daniel Blonski, Javier de Blas

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10 Citas (Scopus)

Resumen

A semiassisted global navigation satellite systems (GNSS) authentication concept is proposed, with two main advantages. First, it can be implemented in a GNSS without modifications to the signal plan, provided that the GNSS can transmit an encrypted signal and an open signal with unpredictable and verifiable bits regularly. Second, it can work in a receiver for up to several days without any assistance or the possession of a private key, at the expense of some authentication latency. In this concept, parts of the encrypted signal to be transmitted in the future are re-encrypted, published, and downloaded in the receiver. Some seconds after transmission, the satellite openly broadcasts the decryption key, and the receiver performs the a-posteriori correlation with the encrypted signal. The concept is particularized for the Galileo system as Galileo assisted commercial authentication service, based on OSNMA in E1B for the decryption keys and E6C for the encrypted signal. An end-to-end procedure for measurement authentication is proposed and tested, showing its viability.

Idioma originalInglés
Páginas (desde-hasta)4393-4404
Número de páginas12
PublicaciónIEEE Transactions on Aerospace and Electronic Systems
Volumen59
N.º4
DOI
EstadoPublicada - ago 2023

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