Sparse multiple-input multiple-output arrays for high-resolution near-field ultra-wideband imaging
- 1 January 2011
- journal article
- research article
- Published by Institution of Engineering and Technology (IET) in IET Microwaves, Antennas & Propagation
- Vol. 5 (13), 1552-1562
- https://doi.org/10.1049/iet-map.2010.0561
Abstract
This study investigates the utilisation of a multiple-input multiple-output (MIMO) array technique for high-resolution near-field ultra-wideband (UWB) imaging. Using this technique, a classical array can be replaced with an MIMO array with a similar resolution and beam pattern but using a smaller number of elements. A deterministic approach to factorise a desired effective array topology into topologies of transmit and receive sub-arrays is suggested. Based on it, an MIMO array design procedure is proposed. A few examples of linear array topologies are suggested and their performances in the near-field are compared for different values of the operational bandwidth. The experimental results verify the correctness and effectiveness of the proposed design procedure for UWB near-field imaging.Keywords
This publication has 19 references indexed in Scilit:
- A Sparse Aperture MIMO-SAR-Based UWB Imaging System for Concealed Weapon DetectionIEEE Transactions on Geoscience and Remote Sensing, 2010
- MIMO Radar Signal ProcessingPublished by Wiley ,2008
- UWB Array-Based Sensor for Near-Field ImagingIEEE Transactions on Microwave Theory and Techniques, 2007
- High-resolution through-wall imagingPublished by SPIE-Intl Soc Optical Eng ,2006
- Multiple-input multiple-output (MIMO) radar and imaging: degrees of freedom and resolutionPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- Ultrasparse, ultrawideband arraysIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1998
- Optimizing the radiation pattern of sparse periodic linear arraysIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 1996
- Two-Dimensional Random Arrays for Real Time Volumetric ImagingUltrasonic Imaging, 1994
- Dynamic programming applied to unequally spaced arraysIEEE Transactions on Antennas and Propagation, 1964
- Array factors with nonuniform spacing parameterIEEE Transactions on Antennas and Propagation, 1962