Performance analysis of a civilian GPS position authentication system

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

A position authentication system utilizing the white noise like GPS spreading codes as tamper proof watermarks is described. Position authentication as used in this paper means the process of checking whether position reports made by a remote user are truthful and accurate. In the method proposed, a segment of the GPS signal collected by a trusted user (called the authenticator) is used as a template. Another user's (called the supplicant) GPS signal is compared with the template to judge if the user's position and time report is authentic. An analysis to explain how noise affects the watermark signal detection is presented. The paper also discusses an important implementation issue: Multiple false peaks caused by C/A power leakage which mask the detection of the watermark. Experimental results show that the authentication method proposed can detect deceptive position report and the resolution of the position authentication is at or better than 15 meters. This method may also be used in other GNSS system, for example Galileo, by utilizing the encrypted Public Regulated Service signal as the "watermark" signal.

Original languageEnglish (US)
Title of host publicationProceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium, PLANS 2012
Pages1028-1041
Number of pages14
DOIs
StatePublished - Sep 19 2012
Event2012 IEEE/ION Position, Location and Navigation Symposium, PLANS 2012 - Myrtle Beach, SC, United States
Duration: Apr 23 2012Apr 26 2012

Publication series

NameRecord - IEEE PLANS, Position Location and Navigation Symposium

Other

Other2012 IEEE/ION Position, Location and Navigation Symposium, PLANS 2012
CountryUnited States
CityMyrtle Beach, SC
Period4/23/124/26/12

Keywords

  • asset/cargo tracking
  • position authentication

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