2013 Proc. Asilomar Conference on Signals, Systems and Computers

A Probabilistic Framework for Global Navigation Satellite Signal Timing Assurance

Kyle Wesson, Brian L. Evans and Todd E. Humphreys

Wireless Networking and Communications Group, The University of Texas at Austin, Austin, TX 78712 USA
kyle.wesson@utexas.edu - bevans@ece.utexas.edu - todd.humphreys@utexas.edu

Paper Draft - Poster

Radionavigation Security Research at UT Austin


Global Navigation Satellite System (GNSS) signals serve as a worldwide timing reference in numerous technological sectors. Yet GNSS receivers are vulnerable to so-called spoofing attacks that can manipulate the time reference. We illustrate the need for a probabilistic security model in the context of authenticating a timing signal as opposed to the traditionally non-probabilistic security models of message authentication and cryptography. Our primary contribution is establishing the necessary conditions for timing assurance in the context of securityenhanced GNSS signals. In addition, we formulate a probabilistic framework for timing assurance that combines cryptography and statistical signal processing across multiple network layers.

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Last Updated 11/25/13.