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

Grace Xingxin Gao, Liang Heng, Achim Hornbostel, Holmer Denks, Michael Meurer, Todd Walter, Per Enge

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)561-573
Number of pages13
JournalGPS Solutions
Issue number4
StatePublished - Oct 2013


  • DME
  • GPS
  • Galileo
  • Interference mitigation

ASJC Scopus subject areas

  • General Earth and Planetary Sciences

Cite this