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Sensors 2018, 18(1), 311; https://doi.org/10.3390/s18010311

Dual Channel S-Band Frequency Modulated Continuous Wave Through-Wall Radar Imaging

1
Department of Electronic Engineering, Hanyang University, Seoul 04763, Korea
2
Collaborative Robots Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Korea
*
Author to whom correspondence should be addressed.
Received: 6 December 2017 / Revised: 12 January 2018 / Accepted: 16 January 2018 / Published: 22 January 2018
(This article belongs to the Section Remote Sensors)
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Abstract

This article deals with the development of a dual channel S-Band frequency-modulated continuous wave (FMCW) system for a through-the-wall imaging (TWRI) system. Most existing TWRI systems using FMCW were developed for synthetic aperture radar (SAR) which has many drawbacks such as the need for several antenna elements and movement of the system. Our implemented TWRI system comprises a transmitting antenna and two receiving antennas, resulting in a significant reduction of the number of antenna elements. Moreover, a proposed algorithm for range-angle-Doppler 3D estimation based on a 3D shift invariant structure is utilized in our implemented dual channel S-band FMCW TWRI system. Indoor and outdoor experiments were conducted to image the scene beyond a wall for water targets and person targets, respectively. The experimental results demonstrate that high-quality imaging can be achieved under both experimental scenarios. View Full-Text
Keywords: 3D shift invariant; TWRI; FMCW; dual channel 3D shift invariant; TWRI; FMCW; dual channel
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Li, Y.-C.; Oh, D.; Kim, S.; Chong, J.-W. Dual Channel S-Band Frequency Modulated Continuous Wave Through-Wall Radar Imaging. Sensors 2018, 18, 311.

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