IEEE Transactions on Aerospace and Electronic Systems, submitted Feb. 11, 2017.

GNSS Signal Authentication via Power and Distortion Monitoring

Kyle D. Wesson (1), Jason N. Gross (2), Todd E. Humphreys (1) and Brian L. Evans (1)

(1) Wireless Networking and Communications Group, The University of Texas at Austin, Austin, Texas USA - -

(2) Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, West Virginia USA

Paper Draft

UT Austin Radionavigation Laboratory


We propose a simple low-cost technique that enables civil Global Positioning System (GPS) receivers and other civil global navigation satellite system (GNSS) receivers to reliably detect spoofing and jamming. The technique, which we call the Power-Distortion detector, classifies received signals as interference-free, multipath-afflicted, spoofed, or jammed according to observations of received power and correlation function distortion. It does not depend on external hardware or a network connection and can be readily implemented on many receivers via a firmware update. Crucially, the detector can with high probability distinguish low-power spoofing from ordinary multipath. In testing against over 25 high-quality empirical data sets yielding >900,000 separate detection tests, the detector correctly alarms on all malicious spoofing and jamming attacks while maintaining a <0.2% single-channel false alarm rate.

COPYRIGHT NOTICE: All the documents on this server have been submitted by their authors to scholarly journals or conferences as indicated, for the purpose of non-commercial dissemination of scientific work. The manuscripts are put on-line to facilitate this purpose. These manuscripts are copyrighted by the authors or the journals in which they were published. You may copy a manuscript for scholarly, non-commercial purposes, such as research or instruction, provided that you agree to respect these copyrights.

Last Updated 02/16/17.