Anti-decoying/anti-spoofing encrypted positioning

Centre National d'Etudes Spatiales CNES - 10/18/2016


New method based on delocalised veri cation of the authenticity of GNSS signals by an authentication centre. The authentication centre (right-hand part of the image) veri es the authenticity of the GNSS signals received by the user receivers. This veri cation enables the detection of a spoo ng attempt and the tracking of the suspected source.


Filtering/identification Reduced cost due to single secure transmitter- receiver per operating group Fewer losses (equipment, human, etc.) Better effectiveness in the field All-terrain operation


Securing and guaranteeing authentication of location - Guarantee of authentication by the GNSS - Possibility for a terminal to become a server (switch from attacked PVT to a secure solution (encryption)) A more compact, lighter solution - A single secure receiver (grabber) to secure the whole system - Possibility of having light terminals (not only grabbers) - Adaptation of the intelligence quality in the server and the terminals Improved effectiveness in the event of an attack - Attack detection - Possibility of direct communication between user terminals - Raw data instead of PVT guarantees authentication

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