M. Sc. Frederik Kühne

Room F-006
Kaiserstraße 2, 24143 Kiel, Germany
Phone: +49 431 880-6144
Telefax: +49 431 880-6128
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.


Research: Real-time Signal Processing of Cognitive MIMO-SONAR Systems

Current SONAR systems often work with only a single, powerful projector or at most with multiple projectors that radiate the same, phase adjusted signals. In order to improve the setup, MIMO-techniques can be applied, such that signals radiated by multiple projectors can be distinguished and processed accordingly at the receiving side. Therefore, multiple orthogonal signals have to be designed in a robust way, such that their properties remain unchanged by the application environment. For that, not only possible non-linearities in the used hardware have to be considered, but also the path of the signal under water, including diffractions and reflections.

The resulting multistatic SONAR system yields a greatly improved angular resolution due to the multiple, independently processable projector signals. Beamforming algorithms can be shifted towards the receiver side and can be parallelized efficiently, resulting in much faster detection times.

For the classification of the detected objects, nonlinear approaches are to be tested. The design and training of neural networks is expected to yield results fast and more efficiently than conventional methods.

Related topics:

  • Signal design
  • Beamforming
  • Neural networks
  • MIMO techniques


Further interests:

  • Real-time digital signal processing
  • Hardware developement
  • Detection & tracking


Short CV

Time span Details
2020 - current Research assistant at the Christian-Albrechts-Universität zu Kiel, Kiel, Germany
2018 - 2020 M.Sc. in Electrical Engineering and Business Administration
Christian-Albrechts-Universität zu Kiel, Germany
2017 - 2018 Electronics technician for industrial engineering, apprenticeship
SWN Stadtwerke Neumünster GmbH, Germany
2014 - 2018 Internship (R&D) at Daimler AG, Stuttgart, Germany




    B. Kaulen, H. Lewitz, O. Wisch, F. Kühne, G. Schmidt: Entwurf und Implementierung einer schnellen Frequenzgangmessung und automatischer Entzerrung von akustischen Schallwandlern, Proc. DAGA, Germany, 2022


    F. Kühne, B. Kaulen, O. Wisch, G. Schmidt: Entwurf und Implementierung einer modularen Softwarearchitektur für kognitive verteilte Echtzeit-MIMO-SONAR-Systeme, Proc. DAGA, Germany, 2022


    O. Wisch, F. Kühne, B. Kaulen, G. Schmidt: Geräuschreduktion und Entzerrung für gemischt analog-digitale Sprachübertragungen im Unterwasserkanal, Proc. DAGA, Germany, 2022