GPS Solutions

, Volume 17, Issue 4, pp 561–573 | Cite as

DME/TACAN interference mitigation for GNSS: algorithms and flight test results

  • Grace Xingxin GaoEmail author
  • Liang Heng
  • Achim Hornbostel
  • Holmer Denks
  • Michael Meurer
  • Todd Walter
  • Per Enge
Original Article


The Galileo E5a/E5b signals and the Global Positioning System (GPS) L5 signal lie within the aeronautical radionavigation services (ARNS) band. They suffer interference from the services in this frequency band, in particular, pulsed signals from distance measuring equipment (DME) and tactical air navigation (TACAN) systems. To maintain system accuracy and integrity, interference mitigation is beneficial and necessary. We first present the real DME/TACAN environment at Stanford, CA as an example to illustrate the need for mitigating DME/TACAN interference. We then propose a time and frequency joint mitigation algorithm—Hybrid Blanking and its simplified version, frequency domain adaptive filtering (FDAF) for hardware implementation. Finally, a flight measurements campaign was performed over a European DME/TACAN hotspot near Frankfurt, Germany, to record a worst-case DME interference environment. Recorded data from the flight tests mixed with injected GNSS signals verify the effectiveness of the proposed mitigation algorithm.


GPS Galileo DME Interference mitigation 



This work was supported in part by the US Federal Aviation Administration under Grant—G-007 and by the European Commission.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Grace Xingxin Gao
    • 1
    • 2
    Email author
  • Liang Heng
    • 2
  • Achim Hornbostel
    • 3
  • Holmer Denks
    • 4
  • Michael Meurer
    • 5
  • Todd Walter
    • 6
  • Per Enge
    • 6
  1. 1.Department of Aerospace EngineeringUniversity of Illinois at Urbana-ChampaignUrbana-ChampaignUSA
  2. 2.University of Illinois at Urbana-ChampaignUrbana-ChampaignUSA
  3. 3.Institute of Communications and NavigationGerman Aerospace Center (DLR)CologneGermany
  4. 4.Galileo Control CentreWesslingGermany
  5. 5.Department of Navigation of the German Aerospace Center (DLR)Institute for Communications and NavigationCologneGermany
  6. 6.Department of Aeronautics and AstronauticsStanford UniversityStanfordUSA

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