Title: Phase compensation and processing in multiple-input–multiple-output radars
Authors: SAMMARTINO PIER FRANCESCOTARCHI DarioFORTUNY GUASCH JoaquimOLIVERI FrancoGIULIANI RAIMONDO
Citation: IET RADAR SONAR AND NAVIGATION vol. 6 no. 4 p. 222-232
Publisher: INST ENGINEERING TECHNOLOGY-IET
Publication Year: 2011
JRC N°: JRC64908
ISSN: 1751-8784
URI: http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=06178369
http://publications.jrc.ec.europa.eu/repository/handle/JRC64908
DOI: 10.1049/iet-rsn.2011.0246
Type: Articles in Journals
Abstract: In this paper the issue of phase discontinuity in MIMO radar systems is analyzed and described in detail, together with an efficient way for processing MIMO radar data by means of FFT. In particular, it is here shown that the phase of a point target illuminated by a MIMO radar has a number of discontinuities due to the geometry of the antennas. It is also shown that these become negligible in the far range, whilst they represent an issue in the short range if not compensated properly whereas, in turn, they prevent FFT-based algorithms to focus correctly the received signals. It is therefore here shown that data of MIMO radars have to be pre-processed in order to allow an efficient FFT-based focalization. For this purpose, together with a theoretical description of the problem, a sub-optimal algorithm is presented, discussed and tested against real data gathered by the JRC MIMO radar system.
JRC Institute:Institute for the Protection and Security of the Citizen

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