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Journal of Electrical and Computer Engineering
Volume 2013, Article ID 809691, 8 pages
Research Article

Space-Time Radar Waveforms: Circulating Codes

Microwave Sensing, Systems and Signals (MS3), Delft University of Technology, 2628 CD Delft, The Netherlands

Received 18 May 2013; Accepted 1 August 2013

Academic Editor: Sandra Costanzo

Copyright © 2013 G. Babur et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper describes a concept of the circulating codes covering the whole class of the space-time codes. The circulating codes do not narrow the radiated pattern of the antenna array, thus providing a wide angular coverage, possibly tunable. In turn, the beam-forming on transmit is achievable by means of the signal processing in one (or each) receiver channel. The modelling results demonstrate the efficiency of the circulating codes based on their multidimensional ambiguity functions.