Title :
The comparison of the near field beam patterns of 1D-CR MIMO and 2D-CR MIMO arrays
Author :
Cetinkaya, H. ; Wang, J. ; Tran, D. ; Yarovoy, A.G.
Author_Institution :
Microwave Sensing, Signals & Syst. (MS3), Delft Univ. of Technol., Delft, Netherlands
fDate :
June 30 2014-July 4 2014
Abstract :
The focusing capabilities for one dimensional (1D-CR MIMO) and two dimensional circularly rotating multiple input multiple output (2D-CR-MIMO) arrays in different media are investigated. Impact of the position of the focusing point on the beamwidth and sidelobe structure is investigated. Impact of the medium (dielectric permittivity and ohmic losses) on the focusing capabilities is studied. For focusing point located at the edge position, within non or low conductive media, the -3 dB main beam width for both arrays become wider. In the same media, the form of the side lobes for 2D-CR MIMO array exhibit a spreading form while those for 1D-CR MIMO array show a spreading and periodic form. Within the high conductive medium, side lobes are concentrated around virtual elements which have a relatively narrow geometrical angle to the focusing point.
Keywords :
MIMO radar; antenna radiation patterns; ground penetrating radar; log periodic antennas; permittivity; radar antennas; 2D-CR MIMO array near field beam pattern; 2D-CR multiple input multiple output array sidelobe structure; ID-CR MIMO array near field beam pattern; dielectric permittivity; focusing point position; geometrical angle; ground penetrating radar; low conductive media; nonconductive media; ohmic losses; one dimensional circularly rotating MIMO array; periodic form; spreading form; two dimensional circularly rotating MIMO array; virtual element; Apertures; Feature extraction; Landmine detection; MIMO; Media; Metals; Receivers; Ground Penetrating Radar (GPR); MIMO array; TBM;
Conference_Titel :
Ground Penetrating Radar (GPR), 2014 15th International Conference on
Conference_Location :
Brussels
DOI :
10.1109/ICGPR.2014.6970528
