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24GHz Digital beamforming radar with T-shaped antenna array for three-dimensional object detection

Published online by Cambridge University Press:  16 May 2012

Marlene Harter ,
Tom Schipper ,
Lukasz Zwirello ,
Andreas Ziroff  and
Thomas Zwick
Marlene Harter*
Affiliation:
Karlsruher Institut für Technologie (KIT), Institut für Hochfrequenztechnik und Elektronik (IHE), Kaiserstrasse 12, 76131 Karlsruhe, Germany Siemens AG, Corporate Technology, Corporate Research and Technologies, Otto-Hahn-Ring 6, 81739 München, Germany
Tom Schipper
Affiliation:
Karlsruher Institut für Technologie (KIT), Institut für Hochfrequenztechnik und Elektronik (IHE), Kaiserstrasse 12, 76131 Karlsruhe, Germany
Lukasz Zwirello
Affiliation:
Karlsruher Institut für Technologie (KIT), Institut für Hochfrequenztechnik und Elektronik (IHE), Kaiserstrasse 12, 76131 Karlsruhe, Germany
Andreas Ziroff
Affiliation:
Siemens AG, Corporate Technology, Corporate Research and Technologies, Otto-Hahn-Ring 6, 81739 München, Germany
Thomas Zwick
Affiliation:
Karlsruher Institut für Technologie (KIT), Institut für Hochfrequenztechnik und Elektronik (IHE), Kaiserstrasse 12, 76131 Karlsruhe, Germany
*
Corresponding author: M. Harter Email: [email protected]
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Abstract

This paper introduces a radar system for three-dimensional (3D) object detection and imaging. The presented 3D measurement method combines the frequency-modulated continuous wave (FMCW) approach for range measurements with a multiple-input multiple-output (MIMO) technique for digital beamforming in two dimensions. With an orthogonal arrangement of the antenna arrays for transmit and receive, the angular information is obtained in azimuth and elevation without mechanical beamsteering. The proposed principle allows performing 3D imaging by means of the acquired range, azimuth, and elevation information with a minimum of required hardware. Starting from the realization of the 3D radar imaging concept, the hardware architecture and the developed prototype are discussed in detail. Furthermore, the object detection capability of the 3D imaging radar system is demonstrated by measurements. The results show that the introduced 3D measurement concept in its realization is well suited for numerous applications.

Keywords

Radar architecture and systemsSmart antennasDigital beamforming
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 4 , Special Issue 3: European Microwave Week 2011 , June 2012 , pp. 327 - 334
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2012

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References

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