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Session A1: Space and Satellite Applications, NTS-3 Overview

NTS-3 Signals Assurance Experiments
Joanna Hinks, Air Force Research Laboratory/RV, James T. Gillis, The Aerospace Corporation; Perry Loveridge, Joseph J. Rushanan, The MITRE Corporation
Date/Time: Tuesday, Aug. 24, 2:10 p.m.

NTS-3 presents a unique opportunity to experiment with signal designs that enhance the assurance of navigation. This talk enumerates the wide variety of planned assurance experiments. We first discuss signal authentication experiments, which use the protocol Chimera (Chips Message Robust Authentication). Chimera, which has been described previously, combines asymmetric cryptography protections on the data in a navigation signal with shared-key cryptographic methods applied to the underlying spreading codes. NTS-3 will broadcast Chimera signals and test variations on the protocol design.
There are also other sets of experiments that are planned specific to cryptographic methods. The first set concerns variations in using cryptography to generate the spreading codes in a navigation signal. The second set of experiments looks at varying the cryptographic algorithms themselves, e.g., to assess the impact if algorithms need to be changed in the future. Finally, NTS-3 allows for robust data services, and the third set of experiments will focus on how these services can enhance cryptographic functionality.
Approved for public release; distribution is unlimited. Public Affairs release approval #AFMC-2020-0220.



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