The Influence of the Water-covered Dielectric Radome on 77GHz Automotive Radar Signals

N. Chen, R. Gourova, O.A. Krasnov, A. Yarovoy

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

5 Citations (Scopus)


A thin water film can easily form on the surface of an automotive radar dielectric radome during adverse weather and it causes a considerable loss of the signal power due to changes in attenuation and reflections. In this paper, influence of a thin water layer at dielectric bumper on automotive radar operating in a wide frequency interval 75-85GHz is studied. Two models are derived and analyzed to investigate water layer influence — a theoretical model that is based on the analysis of plane wave propagation in the stratified media and a numerical model that takes into account near-field propagation effects with the CST simulations. Both models are compared with the measurement results. The resulting automotive radar radome reflectances and transmittances from both models and measurements are presented as functions of the frequency and water film thickness, demonstrating possible influence of nearfield effects and measurement errors. These results can be used to estimate the influence of adverse weather conditions on the automotive radar efficiency.
Original languageEnglish
Title of host publicationProceedings of the 14th European Radar Conference
Place of PublicationPiscataway, NJ
Number of pages4
ISBN (Electronic)978-2-87487-049-1
Publication statusPublished - 2017
Event14th European Radar Conference, EuRAD 2017 - Nuremberg, Germany
Duration: 11 Oct 201713 Oct 2017


Conference14th European Radar Conference, EuRAD 2017
Abbreviated titleEuRAD-2017
Internet address


  • Numerical models
  • Radar
  • Propagation
  • Automotive engineering
  • Dielectrics
  • Frequency measurement

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