Authentication of satellite navigation signals by wiretap coding and artificial noise
Francesco Formaggio, Stefano Tomasin · EURASIP Journal on Wireless Communications and Networking · 2019
In order to combat the spoofing of global navigation satellite system (GNSS) signals, we propose a novel signal authentication method based on information-theoretic security. In particular, the satellite superimposes to the navigation signal an authentication signal containing a secret authentication message corrupted by artificial noise (AN). We impose the following properties: The legitimate receiver synchronizes with the navigation signal and stores the samples of the authentication signal with the same synchronization. After the transmission of the authentication signal, through a separate public asynchronous ground channel (e.g., a secure Internet connection) additional information is made public allowing the receiver to We assess the performance of the proposed scheme by the analysis of both the secrecy capacity of the authentication message and the attack success probability under various attack scenarios.