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- Derivation and Validation of a Three-dimensional Microwave Imaging Using a W-band MIMO Radar(가민호 교수님 연구실)
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- 2023.03.14
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저자: Sumin Kim, Jeongbae Kim, Chaerin Chung, Min-Ho Ka,제목: Derivation and Validation of a Three-dimensional Microwave Imaging Using a W-band MIMO Radar출간일: 2022년 9월 20일학술지명: IEEE Transactions on Geoscience and Remote Sensing, Vol. 60, pp.1-16, 20 Sept. 2022, DOI: 10.1109/TGRS.2022.3207013Impact Factor: 8.125 (최상위 학술지)Abstract
This study proposes 1 a method for synthesizing
2 3-D microwave images using a multiple-input–multiple-output
3 (MIMO) radar. Recent studies on MIMO radar technology
4 have reported promising hardware that can be used in radar
5 imaging. In particular, the increased amount of data acquired
6 from MIMO radar is effective for 3-D radar imaging. Despite
7 the demand for using 3-D radar imaging, the underlying technical
8 challenges have not been addressed. Although the array synthetic
9 aperture radar method is promising, realizing a multichannel
10 radar with numerous channels requires significant effort in
11 terms of hardware. Therefore, an MIMO radar can be used
12 to effectively increase the number of channels with reduced
13 hardware. Studies on beat frequency division (BFD) frequency14
modulated continuous wave (FMCW) radars show that the
15 simultaneously transmitted MIMO signal is suitable for radar
16 imaging applications without hindering the along-track imaging
17 performances. In this study, the signal of a BFD FMCW radar
18 mounted on a movable platform is modeled according to the
19 imaging geometry, and a fast Fourier transform-based imaging
20 algorithm is derived to efficiently process the multichannel
21 data. This algorithm is applied to the simulated radar data to
22 verify the effectiveness of the proposed method. The method is
23 further assessed by applying the imaging algorithm to the radar
24 data acquired from a functional W-band BFD FMCW radar
25 hardware. The radar transceiver was mounted on a movable
26 table, and the data are measured at an outdoor experiment site.
27 The results verify that the proposed method can be used for
28 various 3-D radar imaging applications.
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