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

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

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

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

Website News

03.12.2017: Added pictures from our Sylt meeting.

01.10.2017: Started with a Tips and Tricks section for KiRAT.

01.10.2017: Talks from Jonas Sauter (Nuance) and Vasudev Kandade Rajan (Harman/Samsung) added.

13.08.2017: New Gas e.V. sections (e.g. pictures or prices) added.

Recent Publications

J. Reermann, P. Durdaut, S. Salzer, T. Demming, A. Piorra, E. Quandt, N. Frey, M. Höft, and G. Schmidt: Evaluation of Magnetoelectric Sensor Systems for Cardiological Applications, Measurement (Elsevier), ISSN 0263-2241, https://doi.org/­10.1016/­j.measurement.2017.09.047, 2017

S. Graf, T. Herbig, M. Buck, G. Schmidt: Low-Complexity Pitch Estimation Based on Phase Differences Between Low-Resolution Spectra, Proc. Interspeech, pp. 2316 -2320, 2017

Contact

Prof. Dr.-Ing. Gerhard Schmidt

E-Mail: gus@tf.uni-kiel.de

Christian-Albrechts-Universität zu Kiel
Faculty of Engineering
Institute for Electrical Engineering and Information Engineering
Digital Signal Processing and System Theory

Kaiserstr. 2
24143 Kiel, Germany

Recent News

Jugend Forscht

On November 24th, one of our DSS team members, Owe Wisch, took part in the "Jugend forscht Perspektivforum" at the CAU. Thirty young students from the "Jugend forscht" project came to Kiel and participated in three different workshops focusing on career paths in maritime climate protection. Owe Wisch from our chair lead one of the workshops and presented his research topics, beamforming ...


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