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M. Sc. Thorben Kaak

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 MIMO Signal Processing for active SONAR Systems

The development of SONAR (acronym: SOund Navigation And Ranging) systems startet in the early 20th century inspired by the calamity of the Titanic in 1912. A system should be developed to prevent collision with icebergs. Since that time systems for a broad variety of applications such as navigation, fish finding, cartography, etc. have been developed and SONAR systems are extensively used in civil as well as military shipping. Next to active systems where emitted soundwaves are used to sense the environment by reflections, passive systems are available which are solely listening for waves emitted by the environment. In many available systems "classical" techniques like time-delay beamforming and the emission of correlated waveforms using all available sender elements are utilized. Next to that the operator needs to intervene to adopt the emitted waveforms and the processing chain to the environment and the awaited target type to achieve an optimal detection rate.

Recently so called cognitive SONAR-systems and in addition to that MIMO techniques are proposed. Both ideas should be combined to build an innovative more powerful system. While cognitive systems are sensing the environment and utilizing previous detection data to autonomously optimize emitted waveforms and the processing of the raw data to the situation, MIMO-systems are emitting uncorrelated waveforms to achieve an improved illumination of the underwaterchannel and such virtual arrays with a higher number of elements. As the number of elements is related to the resolution of the system such systems are e.g. capable of an enhanced detection rate.

Related topics:

  • Beamforming
  • MIMO techniques
  • Sensor fusion
  • Array design
  • Signal design

 

Further interests:

  • Real-time digital signal processing
  • Detection & tracking
  • Channel / environment simulation

 

Short CV

 
 
Time span   Details  
  2016 - current   Research assistant at the Christian-Albrechts-Universität zu Kiel, Kiel, Germany  
  2014 - 2016   M.Sc. in Electrical and Information Engineering
Christian-Albrechts-Universität zu Kiel, Germany
 
  2010 - 2014   B.Sc. in Electrical and Information Engineering
Christian-Albrechts-Universität zu Kiel, Germany
 
  2008 - 2010   Electronics technician for industrial engineering, apprenticeship
SWN Stadtwerke Neumünster GmbH, Germany
 

 

Publications

  1.    

    T. Kaak, K. Rebbe and G. Schmidt: Verbesserung der Detektionsleistung durch den TRVI-CFAR-Algorithmus, Proc. DAGA, Germany, 2018

  2.    

    T. O. Wisch, T. Kaak, A. Namenas, G. Schmidt: Spracherkennung in stark gestörten Unterwasserumgebungen, Proc. DAGA, Germany, 2018

  3.    

    A. Namenas, T. Kaak, T. O. Wisch and G. Schmidt: Zieldetekion und Tracking mit einem Echtzeit-MIMO-SONAR-System, Proc. DAGA, Germany, 2018

  4.    

    T. Kaak, and G. Schmidt: An Introduction to Real-time Cognitive SONAR Systems Utilizing Novel MIMO Approaches, Proc. DAGA, Kiel, Germany, open access, 2017

  5.    

    A. Namenas, T. Kaak, and G. Schmidt: Real-time Simulation of Underwarter Acoustic Channels, Proc. DAGA, Kiel, Germany, open access, 2017