Low-Latency Authentication of Navigation Message

Sang Wu Kim and Khanh D. Pham

Peer Reviewed

Abstract: We propose a low-latency authentication method that allows a timely verification of the authenticity of received navigation messages in the Global Navigation Satellite Systems (GNSS). The proposed approach is to superimpose the authentication tag onto the navigation message and transmit them simultaneously within the same frequency band. This innovative approach enables instantaneous authentication, as both the navigation message and the authentication tag are received simultaneously. A comprehensive evaluation was conducted, focusing on key performance metrics such as the Authentication Error Rate (AER), Time Between Authentications (TBA), and Authenticated Throughput. The proposed technique can be useful for low-latency applications, such as autonomous vehicles, where the navigation message needs to be verified promptly and for military applications, aviation, search and rescue operations where the Time To First Fix (TTFF) needs to be kept small.
Published in: Proceedings of the ION 2024 Pacific PNT Meeting
April 15 - 18, 2024
Hilton Waikiki Beach
Honolulu, Hawaii
Pages: 722 - 731
Cite this article: Kim, Sang Wu, Pham, Khanh D., "Low-Latency Authentication of Navigation Message," Proceedings of the ION 2024 Pacific PNT Meeting, Honolulu, Hawaii, April 2024, pp. 722-731. https://doi.org/10.33012/2024.19632
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