Analytical Investigation of Non-Coherent Mutual FMCW Radar Interference

Mate Toth, Paul Meissner, Alexander Melzer, Klaus Witrisal

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review


Radar sensors are increasingly utilized in today's cars. This inevitably leads to increased mutual sensor interference and thus a performance decrease, potentially resulting in major safety risks. Understanding signal impairments caused by interference accurately helps to devise signal processing schemes to combat said performance degradation. For the frequency modulated continuous wave (FMCW) radars prevalent in automotive applications, it has been shown that so-called non-coherent interference occurs frequently and results in an increase of the noise floor. In this work we investigate the impact of interference analytically by focusing on its detailed description. We show, among others, that the spectrum of the typical interference signal has a linear phase and a magnitude that is strongly fluctuating with the phase parameters of the time domain interference signal. Analytical results are verified by simulation, highlighting the dependence on the specific phase terms that cause strong deviations from spectral whiteness.

Original languageEnglish
Title of host publication2018 15th European Radar Conference, EuRAD 2018
PublisherInstitute of Electrical and Electronics Engineers
Number of pages4
ISBN (Electronic)9782874870538
Publication statusPublished - 26 Nov 2018
Event15th European Radar Conference: EuRAD 2018 - IFEMA Feria de Madrid, Madrid, Spain
Duration: 26 Sep 201828 Sep 2018


Conference15th European Radar Conference
Abbreviated titleEuRAD 2018
Internet address


  • automotive components
  • millimeter wave radar
  • radar signal processing
  • radiofrequency interference
  • sensor systems

ASJC Scopus subject areas

  • Signal Processing
  • Safety, Risk, Reliability and Quality
  • Instrumentation


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