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Hybrid Beam-Steering OFDM-MIMO Radar: High 3-D Resolution With Reduced Channel Count

Schneider, D. A.; Rosch, M. 1; Tessmann, A. 1; Zwick, Thomas 1
1 Institut für Hochfrequenztechnik und Elektronik (IHE), Karlsruher Institut für Technologie (KIT)


We report on the realization of a multichannel imaging radar that achieves uniform 2-D cross-range resolution by means of a linear array of a special form of leaky-wave antennas. The presented aperture concept enables a tradeoff between the available range resolution and a reduction in the number of channels required for a given angular resolution. The antenna front end is integrated within a multichannel radar based on stepped-carrier orthogonal frequency-division modulation, and the advantages and challenges specific to this combination are analyzed with respect to signal processing and a newly developed calibration routine. The system concept is fully implemented and verified in the form of a mobile demonstrator capable of soft real-time 3-D processing. By combining radio frequency (RF) components operating in the W-band (85-105 GHz) with the presented aperture, a 3-D resolution of less than 1.5° x 1.5° x 15 cm is demonstrated using only eight transmitters and eight receivers.

Verlagsausgabe §
DOI: 10.5445/IR/1000137481
Veröffentlicht am 01.10.2021
DOI: 10.1109/TMTT.2021.3104296
Zitationen: 5
Zitationen: 7
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Hochfrequenztechnik und Elektronik (IHE)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 11.2021
Sprache Englisch
Identifikator ISSN: 0018-9480, 1557-9670
KITopen-ID: 1000137481
Erschienen in IEEE Transactions on Microwave Theory and Techniques
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Band 69
Heft 11
Seiten 5057-5071
Vorab online veröffentlicht am 23.08.2021
Nachgewiesen in Scopus
Web of Science
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