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Proceedings Paper

MIMO radar for through-wall target identification in single and two wall scenarios
Author(s): Evan T. Gebhardt; Ram M. Narayanan; Sean P. Broderick
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Paper Abstract

MIMO radar provides improvement over traditional phased array radars for through wall imaging. By transmitting independent waveforms from a transmit array to a receive array an effective virtual array is created. This array has improved degrees of freedom over phased arrays and mono-static MIMO systems. This virtual array allows us to achieve the same effective aperture length as a phased array with less elements because the virtual array can be described as the convolution of transmit and receive array positions. In addition, data from multiple walls of the same room can be used to collect target information. If two walls are perpendicular to each other and the geometry of transmit and receive arrays is known, then data can be processed independently of each other. Since the geometry of the arrays is known, a target scene can be created where the two data sets overlap. The overlapped scene can then be processed so that image artifacts that do not correlate between the data sets can be excised. The result gives improved target detection, reduction in false alarms, robustness to noise, and robustness against errors such as improperly aligned antennas.

Paper Details

Date Published: 12 May 2016
PDF: 11 pages
Proc. SPIE 9829, Radar Sensor Technology XX, 98290Z (12 May 2016); doi: 10.1117/12.2224229
Show Author Affiliations
Evan T. Gebhardt, The Pennsylvania State Univ. (United States)
Ram M. Narayanan, The Pennsylvania State Univ. (United States)
Sean P. Broderick, U.S. Army CERDEC Intelligence and Information Warfare Directorate (United States)

Published in SPIE Proceedings Vol. 9829:
Radar Sensor Technology XX
Kenneth I. Ranney; Armin Doerry, Editor(s)

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