On the Impact of Channel Imbalance on MIMO Radar Performance

Ricard L. Grove*, Jørgen Dall*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


The multiple-input multiple-output (MIMO) radar systems suffer from several types of system imperfections such as antenna mutual coupling, channel imbalance, system hardware limitations, and noise. Through calibration the deterministic system imperfections can be significantly reduced. Some sources of system degradation are time-variant and require re-calibration for instance amplitude and phase drift, while other sources are random, which makes calibration unfeasible. The effects of such sources are analysed with a MIMO radar model using time-division multiplexed (TDM) frequency modulated waveforms. The direction-of-arrival (DOA) estimation error based on a discrete Fourier transform (DFT) together with the peak sidelobe level (PSL) are used as performance parameters
Original languageEnglish
Title of host publicationProceedings of the 17th European Radar Conference (EuRAD)
Publication date2021
ISBN (Electronic)978-2-87487-061-3
Publication statusPublished - 2021
EventEuropean Radar Conference (EURAD) - Utrecht, Netherlands
Duration: 10 Jan 202115 Jan 2021


ConferenceEuropean Radar Conference (EURAD)
City Utrecht


  • MIMO radar
  • Direction-of-arrival
  • System imperfections
  • Channel drift
  • System noise


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