Now showing items 1-14 of 14

    • Analytical and experimental investigation on mitigation of interference in a DBF MIMO radar 

      Wissenschaftlicher Artikel
      Bechter, Jonathan; Rameez, Muhammad; Waldschmidt, Christian (Universität Ulm, 2017)
      As driver assistance systems and autonomous driving are on the rise, radar sensors become a common device for automobiles. The high sensor density leads to the occurrence of interference, which decreases the detection ...
    • Automotive radar interference mitigation by reconstruction and cancellation of interference component 

      Beitrag zu einer Konferenz
      Bechter, Jonathan; Waldschmidt, Christian (Universität Ulm, 2015)
      Automotive radar interference is an issue arising with the increasing amount of radar systems in automotive scenarios. Interference can influence the functionality of a radar system, e.g. decrease its detection capability. ...
    • Automotive radar interference mitigation using a sparse sampling approach 

      Beitrag zu einer Konferenz
      Bechter, Jonathan; Roos, Fabian; Rahman, Mahfuzur; Waldschmidt, Christian (Universität Ulm, 2017)
      The application of radar sensors for driver assistance systems and autonomous driving leads to an increasing probability of radar interferences. Those interferences degrade the detection capabilities and can cause sensor ...
    • Bats-inspired frequency hopping for mitigation of interference between automotive radars 

      Beitrag zu einer Konferenz
      Bechter, Jonathan; Sippel, Carmen; Waldschmidt, Christian (Universität Ulm, 2016)
      It was reported for specific bats, that they use a certain scheme to shift the frequencies of their echo location calls to counteract interferences with conspecifics. As in road traffic, an increasing number of cars is ...
    • Blind adaptive beamforming for automotive radar interference suppression 

      Beitrag zu einer Konferenz
      Bechter, Jonathan; Demirlika, Amarilda; Hügler, Philipp; Roos, Fabian; Waldschmidt, Christian (Universität Ulm, 2018-06-21)
      Radar sensors offer enormous advantages as sensing devices for automated and autonomous driving. However, when multiple of such sensors are operated in a large number of cars, there is a high risk of the occurrence of ...
    • Compensation of motion-induced phase errors in TDM MIMO radars 

      Wissenschaftlicher Artikel
      Bechter, Jonathan; Roos, Fabian; Waldschmidt, Christian (Universität Ulm, 2017)
      For high-resolution direction of arrival estimation, a wide aperture is necessary. This can be achieved with multiple-input multiple-output (MIMO) radars, which offer a wide virtual aperture. However, the requirement of ...
    • Digital beamforming to mitigate automotive radar interference 

      Beitrag zu einer Konferenz
      Bechter, Jonathan; Eid, Karim; Roos, Fabian; Waldschmidt, Christian (Universität Ulm, 2016)
      Interference between automotive radars decreases the sensors’ detection capabilities. It is possible to use digital beamforming (DBF) in multi-antenna systems to reduce the power received from certain directions of ...
    • Effort considerations of compressed sensing for automotive radar 

      Beitrag zu einer Konferenz
      Roos, Fabian; Hügler, Philipp; Bechter, Jonathan; Razzaq, Muhammad Ahsan; Knill, Christina; Appenrodt, Nils; Dickmann, Jürgen; Waldschmidt, Christian (Universität Ulm, 2019-01-21)
      The application of iterative compressed sensing algorithms for automotive radar is often considered as too complex for real-time evaluation. In this paper, it is shown that the number of required iterations can be chosen ...
    • Eigenschaften und Unterdrückung von Interferenzen zwischen Kfz-Radarsensoren 

      Dissertation
      Bechter, Jonathan (Universität Ulm, 2019-05-27)
      Zur Erfassung von Personen und Objekten im Umfeld von Kraftfahrzeugen werden unter anderem Radarsensoren eingesetzt. Um die Sensoranforderungen für automatisierte und autonome Fahraufgaben zu erfüllen, werden an einzelnen ...
    • Enhancement of doppler unambiguity for chirp-sequence modulated TDM-MIMO radars 

      Beitrag zu einer Konferenz
      Roos, Fabian; Bechter, Jonathan; Appenrodt, Nils; Dickmann, Jürgen; Waldschmidt, Christian (Universität Ulm, 2018-05-09)
      Current automotive radar sensors enhance the angular resolution using a multiple-input multiple-output approach. The often applied time-division multiplexing scheme has the drawback of a reduced unambiguous Doppler velocity ...
    • Estimation and cancellation of interferences in automotive radar signals 

      Beitrag zu einer Konferenz
      Bechter, Jonathan; Waldschmidt, Christian; Biswas, Kushan Deb (Universität Ulm, 2017)
      Radar sensors become typical components for automotive driver assistance systems and autonomous driving. The widespread use of this sensor type leads to an increasing risk of unwanted interferences. Those interferences ...
    • Ghost target identification by analysis of the doppler distribution in automotive scenarios 

      Beitrag zu einer Konferenz
      Roos, Fabian; Sadeghi, Mohammadreza; Bechter, Jonathan; Appenrodt, Nils; Dickmann, Jürgen; Waldschmidt, Christian (Universität Ulm, 2017-08-15)
      In an automotive environment the presence of reflecting surfaces cannot be avoided. The electromagnetic wave returning from a target vehicle can get reflected on those surfaces causing a non existing so-called ghost ...
    • Interference of chirp sequence radars by OFDM radars at 77 GHz 

      Beitrag zu einer Konferenz
      Knill, Christina; Bechter, Jonathan; Waldschmidt, Christian (Universität Ulm, 2017-05-04)
      Radar sensors are common devices in daily traffic, especially for driver assistance and automotive safety systems. A high sensor density increases the probability of interferences, especially when the sensors occupy a large ...
    • Phase noise mitigation for multistatic FMCW radar sensor networks using carrier transmission 

      Wissenschaftlicher Artikel
      Dürr, André; Schweizer, Benedikt; Bechter, Jonathan; Waldschmidt, Christian (Universität Ulm, 2018-11-13)
      For incoherent radar sensor networks, it is desirable to perform both monostatic and bistatic distance measurements. Especially, the bistatic measurements enable to achieve additional information about a target. As for ...