Dual Channel S-Band Frequency Modulated Continuous Wave Through-Wall Radar Imaging
Dual Channel S-Band Frequency Modulated Continuous Wave Through-Wall Radar Imaging
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DOI：
10.3390/s18010311
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发表时间：
2018-01-01
期刊：
影响因子：
3.9
通讯作者：
Chong, Jong-Wha
中科院分区：
文献类型：
--
作者：
Li, Ying-Chun;Oh, Daegun;Chong, Jong-Wha
本文介绍用于穿墙成像 (TWRI) 系统的双通道 S 波段调频连续波 (FMCW) 系统的开发。大多数使用 FMCW 的现有 TWRI 系统都是为合成孔径雷达 (SAR) 开发的，其具有许多缺点，例如需要多个天线元件和系统移动。我们实施的 TWRI 系统包括一个发射天线和两个接收天线，从而显着减少了天线元件的数量。此外，我们所实现的双通道 S 波段 FMCW TWRI 系统中采用了一种基于 3D 移位不变结构的距离角多普勒 3D 估计算法。进行了室内和室外实验，分别对墙外的水目标和人目标进行成像。实验结果表明，两种实验场景下都可以实现高质量成像。
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.