公开(公告)号：US20250110242A1

公开(公告)日：2025-04-03

申请号：US18479272

申请日：2023-10-02

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： John J. Weger

IPC: G01S19/21 ,  G01S5/02 ,  G01S19/08

Abstract: A global navigation satellite system (GNSS) signal authentication methodology includes receiving, by one or more processors, a first digital signal and a second digital signal, the first digital signal and the second digital signal each representative of a GNSS satellite signal received from a GNSS satellite and including a ranging code that uniquely identifies the GNSS satellite, the first and second GNSS satellite signals transmitted contemporaneously from physically separate antennas onboard the GNSS satellite. The methodology continues with computing, by the one or more processors, a digital fingerprint based on the first digital signal and the second digital signal, and determining, by the one or more processors, that the first GNSS satellite signal and the second GNSS satellite signal are authentic (or not) based on the digital fingerprint. If the first and/or second GNSS satellite signals are found to not be authentic, remedial action may be taken.